Inheritance diagram for com.cloudera.impala.analysis.FunctionCallExpr:

Collaboration diagram for com.cloudera.impala.analysis.FunctionCallExpr:

Public Member Functions
	FunctionCallExpr (String functionName, List< Expr > params)

	FunctionCallExpr (FunctionName fnName, List< Expr > params)

	FunctionCallExpr (FunctionName fnName, FunctionParams params)

boolean	isMergeAggFn ()

void	resetAnalysisState ()

boolean	equals (Object obj)

String	toSqlImpl ()

String	debugString ()

FunctionParams	getParams ()

boolean	isScalarFunction ()

Type	getReturnType ()

boolean	isAggregateFunction ()

boolean	returnsNonNullOnEmpty ()

boolean	isDistinct ()

FunctionName	getFnName ()

void	setIsAnalyticFnCall (boolean v)

void	setIsInternalFnCall (boolean v)

boolean	isConstant ()

void	analyze (Analyzer analyzer) throws AnalysisException

Expr	clone ()

ExprId	getId ()

Type	getType ()

double	getSelectivity ()

long	getNumDistinctValues ()

void	setPrintSqlInParens (boolean b)

boolean	isWhereClauseConjunct ()

void	setIsWhereClauseConjunct ()

boolean	isAuxExpr ()

boolean	isRegisteredPredicate ()

void	setIsAuxExpr ()

Function	getFn ()

void	analyzeNoThrow (Analyzer analyzer)

void	castChildCharsToStrings (Analyzer analyzer) throws AnalysisException

String	toSql ()

TExpr	treeToThrift ()

boolean	isAggregate ()

List< String >	childrenToSql ()

int	hashCode ()

List< Expr >	getConjuncts ()

Expr	trySubstitute (ExprSubstitutionMap smap, Analyzer analyzer, boolean preserveRootType) throws AnalysisException

Expr	substitute (ExprSubstitutionMap smap, Analyzer analyzer, boolean preserveRootType)

Expr	reset ()

boolean	isBound (TupleId tid)

boolean	isBound (SlotId slotId)

boolean	isBoundByTupleIds (List< TupleId > tids)

boolean	isBoundBySlotIds (List< SlotId > slotIds)

void	getIds (List< TupleId > tupleIds, List< SlotId > slotIds)

boolean	isLiteral ()

boolean	isNullLiteral ()

boolean	isScalarSubquery ()

void	checkReturnsBool (String name, boolean printExpr) throws AnalysisException

final Expr	castTo (Type targetType) throws AnalysisException

void	castChild (Type targetType, int childIndex) throws AnalysisException

Expr	ignoreImplicitCast ()

boolean	isImplicitCast ()

String	toString ()

SlotRef	unwrapSlotRef (boolean implicitOnly)

Expr	negate ()

Subquery	getSubquery ()

void	foldConstantChildren (Analyzer analyzer) throws AnalysisException

Static Public Member Functions
static Expr	createExpr (FunctionName fnName, FunctionParams params)

static FunctionCallExpr	createMergeAggCall (FunctionCallExpr agg, List< Expr > params)

static long	getNumDistinctValues (List< Expr > exprs)

static void	analyze (List<?extends Expr > exprs, Analyzer analyzer) throws AnalysisException

static String	toSql (List<?extends Expr > exprs)

static List< TExpr >	treesToThrift (List<?extends Expr > exprs)

static com.google.common.base.Predicate < Expr >	isAggregatePredicate ()

static String	debugString (List<?extends Expr > exprs)

static< CextendsExpr > boolean	equalLists (List< C > l1, List< C > l2)

static< CextendsExpr > boolean	equalSets (List< C > l1, List< C > l2)

static< CextendsExpr > boolean	isSubset (List< C > l1, List< C > l2)

static< CextendsExpr > List< C >	intersect (List< C > l1, List< C > l2)

static void	intersect (Analyzer analyzer, List< Expr > l1, List< Expr > l2, ExprSubstitutionMap smap, List< Expr > i1, List< Expr > i2)

static ArrayList< Expr >	trySubstituteList (Iterable<?extends Expr > exprs, ExprSubstitutionMap smap, Analyzer analyzer, boolean preserveRootTypes) throws AnalysisException

static ArrayList< Expr >	substituteList (Iterable<?extends Expr > exprs, ExprSubstitutionMap smap, Analyzer analyzer, boolean preserveRootTypes)

static ArrayList< Expr >	resetList (ArrayList< Expr > l)

static< CextendsExpr > ArrayList< C >	cloneList (Iterable< C > l)

static< CextendsExpr > void	removeDuplicates (List< C > l)

static< CextendsExpr > void	removeConstants (List< C > l)

static boolean	isBound (List<?extends Expr > exprs, List< TupleId > tids)

static< CextendsExpr > void	getIds (List<?extends Expr > exprs, List< TupleId > tupleIds, List< SlotId > slotIds)

static Expr	pushNegationToOperands (Expr root)

Static Public Attributes
static final int	EXPR_CHILDREN_LIMIT = 10000

static final int	EXPR_DEPTH_LIMIT = 1000

static final com.google.common.base.Predicate < Expr >	IS_NOT_PREDICATE

static final com.google.common.base.Predicate < Expr >	IS_OR_PREDICATE

static final com.google.common.base.Predicate < Expr >	IS_SCALAR_SUBQUERY

static final com.google.common.base.Predicate < Expr >	NON_NULL_EMPTY_AGG

static final com.google.common.base.Predicate < Expr >	IS_BUILTIN_AGG_FN

static final com.google.common.base.Predicate < Expr >	IS_TRUE_LITERAL

Protected Member Functions
	FunctionCallExpr (FunctionCallExpr other)

void	toThrift (TExprNode msg)

String	getFunctionNotFoundError (Type[] argTypes)

void	setId (ExprId id)

void	computeNumDistinctValues ()

Type[]	collectChildReturnTypes ()

Function	getBuiltinFunction (Analyzer analyzer, String name, Type[] argTypes, CompareMode mode) throws AnalysisException

void	castForFunctionCall (boolean ignoreWildcardDecimals) throws AnalysisException

void	convertNumericLiteralsFromDecimal (Analyzer analyzer) throws AnalysisException

void	treeToThriftHelper (TExpr container)

Expr	substituteImpl (ExprSubstitutionMap smap, Analyzer analyzer) throws AnalysisException

void	getIdsHelper (Set< TupleId > tupleIds, Set< SlotId > slotIds)

Expr	uncheckedCastTo (Type targetType) throws AnalysisException

void	uncheckedCastChild (Type targetType, int childIndex) throws AnalysisException

Protected Attributes
ExprId	id_

Type	type_

boolean	isAnalyzed_

boolean	isWhereClauseConjunct_

boolean	printSqlInParens_ = false

double	selectivity_

long	numDistinctValues_

Function	fn_

Static Protected Attributes
static double	DEFAULT_SELECTIVITY = 0.1

Package Functions
Type	getResolvedWildCardType () throws AnalysisException

Static Package Functions
static void	validateScalarFnParams (FunctionParams params) throws AnalysisException

Private Member Functions
	FunctionCallExpr (FunctionName fnName, FunctionParams params, boolean isMergeAggFn)

Type	resolveDecimalReturnType (Analyzer analyzer) throws AnalysisException

Private Attributes
final FunctionName	fnName_

final FunctionParams	params_

boolean	isAnalyticFnCall_ = false

boolean	isInternalFnCall_ = false

final boolean	isMergeAggFn_

String	label_

Detailed Description

Definition at line 37 of file FunctionCallExpr.java.

Constructor & Destructor Documentation

com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr	(	String	functionName,
		List< Expr >	params
	)

inline

Definition at line 51 of file FunctionCallExpr.java.

Referenced by com.cloudera.impala.analysis.FunctionCallExpr.clone(), com.cloudera.impala.analysis.FunctionCallExpr.createExpr(), com.cloudera.impala.analysis.FunctionCallExpr.createMergeAggCall(), and com.cloudera.impala.analysis.FunctionCallExpr.equals().

com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr	(	FunctionName	fnName,
		List< Expr >	params
	)

inline

Definition at line 55 of file FunctionCallExpr.java.

com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr	(	FunctionName	fnName,
		FunctionParams	params
	)

inline

Definition at line 59 of file FunctionCallExpr.java.

com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr	(	FunctionName	fnName,
		FunctionParams	params,
		boolean	isMergeAggFn
	)

inlineprivate

Definition at line 63 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionParams.exprs(), com.cloudera.impala.analysis.FunctionCallExpr.fnName_, com.cloudera.impala.analysis.FunctionCallExpr.isMergeAggFn(), com.cloudera.impala.analysis.FunctionCallExpr.isMergeAggFn_, and com.cloudera.impala.analysis.FunctionCallExpr.params_.

com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr ( FunctionCallExpr other )

inlineprotected

Copy c'tor used in clone().

Definition at line 115 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.fnName_, com.cloudera.impala.analysis.FunctionCallExpr.isAnalyticFnCall_, com.cloudera.impala.analysis.FunctionCallExpr.isInternalFnCall_, com.cloudera.impala.analysis.FunctionCallExpr.isMergeAggFn_, com.cloudera.impala.analysis.FunctionCallExpr.label_, and com.cloudera.impala.analysis.FunctionCallExpr.params_.

Member Function Documentation

void com.cloudera.impala.analysis.FunctionCallExpr.analyze ( Analyzer analyzer ) throws AnalysisException

inline

Perform semantic analysis of node and all of its children. Throws exception if any errors found.

Parameters

analyzer

Exceptions

AnalysisException

Implements com.cloudera.impala.analysis.ParseNode.

Definition at line 348 of file FunctionCallExpr.java.

static void com.cloudera.impala.analysis.Expr.analyze	(	List<?extends Expr >	exprs,
		Analyzer	analyzer
	)		throws AnalysisException

inlinestaticinherited

Helper function: analyze list of exprs

Definition at line 440 of file Expr.java.

void com.cloudera.impala.analysis.Expr.analyzeNoThrow ( Analyzer analyzer )

inlineinherited

Helper function to analyze this expr and assert that the analysis was successful. TODO: This function could be used in many more places to clean up. Consider adding an IAnalyzable interface or similar to and move this helper into Analyzer such that non-Expr things can use the helper also.

Definition at line 238 of file Expr.java.

References com.cloudera.impala.analysis.Expr.analyze().

void com.cloudera.impala.analysis.Expr.castChild	(	Type	targetType,
		int	childIndex
	)		throws AnalysisException

inlineinherited

Add a cast expression above child. If child is a literal expression, we attempt to convert the value of the child directly, and not insert a cast node.

Parameters

targetType	type to be cast to
childIndex	index of child to be cast

Definition at line 1008 of file Expr.java.

Referenced by com.cloudera.impala.analysis.CaseExpr.analyze(), and com.cloudera.impala.analysis.Expr.castForFunctionCall().

void com.cloudera.impala.analysis.Expr.castChildCharsToStrings ( Analyzer analyzer ) throws AnalysisException

inlineinherited

Casts any child which is CHAR to a STRING.

Definition at line 277 of file Expr.java.

References com.cloudera.impala.analysis.Expr.analyze(), com.cloudera.impala.analysis.Expr.castTo(), com.cloudera.impala.catalog.PrimitiveType.CHAR, and com.cloudera.impala.catalog.Type.STRING.

Referenced by com.cloudera.impala.analysis.CaseExpr.analyze().

void com.cloudera.impala.analysis.Expr.castForFunctionCall ( boolean ignoreWildcardDecimals ) throws AnalysisException

inlineprotectedinherited

Generates the necessary casts for the children of this expr to call fn_. child(0) is cast to the function's first argument, child(1) to the second etc. This does not do any validation and the casts are assumed to be safe.

If ignoreWildcardDecimals is true, the function will not cast arguments that are wildcard decimals. This is used for builtins where the cast is done within the BE function. Otherwise, if the function signature contains wildcard decimals, each wildcard child argument will be cast to the highest resolution that can contain all of the child wildcard arguments. e.g. fn(decimal(*), decimal(*)) called with fn(decimal(10,2), decimal(5,3)) both children will be cast to (11, 3).

Definition at line 312 of file Expr.java.

References com.cloudera.impala.analysis.Expr.castChild(), com.cloudera.impala.analysis.Expr.fn_, and com.cloudera.impala.analysis.Expr.getResolvedWildCardType().

Referenced by com.cloudera.impala.analysis.LikePredicate.analyze(), com.cloudera.impala.analysis.InPredicate.analyze(), com.cloudera.impala.analysis.TimestampArithmeticExpr.analyze(), com.cloudera.impala.analysis.CompoundPredicate.analyze(), com.cloudera.impala.analysis.ArithmeticExpr.analyze(), com.cloudera.impala.analysis.BinaryPredicate.analyze(), and com.cloudera.impala.analysis.FunctionCallExpr.analyze().

final Expr com.cloudera.impala.analysis.Expr.castTo ( Type targetType ) throws AnalysisException

inlineinherited

Casts this expr to a specific target type. It checks the validity of the cast and calls uncheckedCastTo().

Parameters

targetType type to be cast to

Returns: cast expression, or converted literal, should never return null

Exceptions

AnalysisException when an invalid cast is asked for, for example, failure to convert a string literal to a date literal

Definition at line 967 of file Expr.java.

References com.cloudera.impala.analysis.Expr.type_, and com.cloudera.impala.analysis.Expr.uncheckedCastTo().

Referenced by com.cloudera.impala.analysis.Expr.castChildCharsToStrings().

void com.cloudera.impala.analysis.Expr.checkReturnsBool	(	String	name,
		boolean	printExpr
	)		throws AnalysisException

inlineinherited

Checks whether this expr returns a boolean type or NULL type. If not, throws an AnalysisException with an appropriate error message using 'name' as a prefix. For example, 'name' could be "WHERE clause". The error message only contains this.toSql() if printExpr is true.

Definition at line 947 of file Expr.java.

References com.cloudera.impala.catalog.Type.isBoolean(), impala.name, com.cloudera.impala.analysis.Expr.toSql(), and com.cloudera.impala.analysis.Expr.type_.

List<String> com.cloudera.impala.analysis.Expr.childrenToSql ( )

inlineinherited

Definition at line 531 of file Expr.java.

Referenced by com.cloudera.impala.analysis.FunctionCallExpr.toSqlImpl().

Expr com.cloudera.impala.analysis.FunctionCallExpr.clone ( )

inline

Definition at line 483 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr().

Referenced by com.cloudera.impala.analysis.AnalyticExpr.AnalyticExpr().

static <CextendsExpr> ArrayList<C> com.cloudera.impala.analysis.Expr.cloneList ( Iterable< C > l )

inlinestaticinherited

Create a deep copy of 'l'. The elements of the returned list are of the same type as the input list.

Definition at line 798 of file Expr.java.

Referenced by com.cloudera.impala.planner.DistributedPlanner.createHashJoinFragment().

Type [] com.cloudera.impala.analysis.Expr.collectChildReturnTypes ( )

inlineprotectedinherited

Collects the returns types of the child nodes in an array.

Definition at line 266 of file Expr.java.

References com.cloudera.impala.analysis.Expr.type_.

Referenced by com.cloudera.impala.analysis.IsNullPredicate.analyze(), com.cloudera.impala.analysis.LikePredicate.analyze(), com.cloudera.impala.analysis.TimestampArithmeticExpr.analyze(), com.cloudera.impala.analysis.CompoundPredicate.analyze(), com.cloudera.impala.analysis.ArithmeticExpr.analyze(), com.cloudera.impala.analysis.BinaryPredicate.analyze(), and com.cloudera.impala.analysis.FunctionCallExpr.analyze().

void com.cloudera.impala.analysis.Expr.computeNumDistinctValues ( )

inlineprotectedinherited

Definition at line 246 of file Expr.java.

References com.cloudera.impala.analysis.Expr.isConstant(), and com.cloudera.impala.analysis.Expr.numDistinctValues_.

Referenced by com.cloudera.impala.analysis.Expr.analyze(), and com.cloudera.impala.analysis.CastExpr.CastExpr().

void com.cloudera.impala.analysis.Expr.convertNumericLiteralsFromDecimal ( Analyzer analyzer ) throws AnalysisException

inlineprotectedinherited

Converts numeric literal in the expr tree rooted at this expr to return floating point types instead of decimals, if possible.

Decimal has a higher processing cost than floating point and we should not pay the cost if the user does not require the accuracy. For example: "select float_col + 1.1" would start out with 1.1 as a decimal(2,1) and the float_col would be promoted to a high accuracy decimal. This function will identify this case and treat 1.1 as a float. In the case of "decimal_col + 1.1", 1.1 would remain a decimal. In the case of "float_col + cast(1.1 as decimal(2,1))", the result would be a decimal.

Another way to think about it is that DecimalLiterals are analyzed as returning decimals (of the narrowest precision/scale) and we later convert them to a floating point type when it is consistent with the user's intent.

TODO: another option is to do constant folding in the FE and then apply this rule.

Definition at line 413 of file Expr.java.

References com.cloudera.impala.analysis.Expr.convertNumericLiteralsToFloat(), com.cloudera.impala.catalog.Type.isDecimal(), and com.cloudera.impala.analysis.Expr.isExplicitCastToDecimal().

Referenced by com.cloudera.impala.analysis.ArithmeticExpr.analyze(), and com.cloudera.impala.analysis.BinaryPredicate.analyze().

static Expr com.cloudera.impala.analysis.FunctionCallExpr.createExpr	(	FunctionName	fnName,
		FunctionParams	params
	)

inlinestatic

Returns an Expr that evaluates the function call <fnName>(<params>). The returned Expr is not necessarily a FunctionCallExpr (example: DECODE())

Definition at line 76 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.equals(), com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr(), and com.cloudera.impala.analysis.FunctionName.getFnNamePath().

static FunctionCallExpr com.cloudera.impala.analysis.FunctionCallExpr.createMergeAggCall	(	FunctionCallExpr	agg,
		List< Expr >	params
	)

inlinestatic

Returns a new function call expr on the given params for performing the merge() step of the given aggregate function.

Definition at line 91 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.fnName_, com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr(), com.cloudera.impala.analysis.FunctionCallExpr.isMergeAggFn_, and com.cloudera.impala.analysis.FunctionName.toString().

String com.cloudera.impala.analysis.FunctionCallExpr.debugString ( )

inline

Definition at line 161 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.fnName_.

static String com.cloudera.impala.analysis.Expr.debugString ( List<?extends Expr > exprs )

inlinestaticinherited

Definition at line 543 of file Expr.java.

static <CextendsExpr> boolean com.cloudera.impala.analysis.Expr.equalLists	(	List< C >	l1,
		List< C >	l2
	)

inlinestaticinherited

Return true if l1[i].equals(l2[i]) for all i.

Definition at line 584 of file Expr.java.

Referenced by com.cloudera.impala.analysis.AggregateInfo.createDistinctAggInfo().

boolean com.cloudera.impala.analysis.FunctionCallExpr.equals ( Object obj )

inline

Definition at line 139 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr(), com.cloudera.impala.analysis.FunctionParams.isDistinct(), com.cloudera.impala.analysis.FunctionParams.isStar(), and com.cloudera.impala.analysis.FunctionCallExpr.params_.

Referenced by com.cloudera.impala.analysis.ExtractFromExpr.analyze(), com.cloudera.impala.analysis.FunctionCallExpr.createExpr(), and com.cloudera.impala.analysis.AnalyticExpr.equals().

static <CextendsExpr> boolean com.cloudera.impala.analysis.Expr.equalSets	(	List< C >	l1,
		List< C >	l2
	)

inlinestaticinherited

Return true if l1 equals l2 when both lists are interpreted as sets. TODO: come up with something better than O(n^2)?

Definition at line 598 of file Expr.java.

Referenced by com.cloudera.impala.planner.AnalyticPlanner.WindowGroup.isCompatible(), and com.cloudera.impala.planner.AnalyticPlanner.SortGroup.isPrefixOf().

void com.cloudera.impala.analysis.Expr.foldConstantChildren ( Analyzer analyzer ) throws AnalysisException

inlineinherited

Evaluate in the BE the children of 'this' that are constant expressions and substitute them with the evaluation result as LiteralExprs. Modifies 'this' in place and does not re-analyze it. Hence, it is not safe to evaluate the modified expr in the BE as the resolved fn_ may be incorrect given the new arguments.

Throws an AnalysisException if the evaluation fails in the BE.

TODO: Used only during partition pruning. Convert it to a generic constant expression folding function to be used during the analysis.

Definition at line 1134 of file Expr.java.

References com.cloudera.impala.analysis.Expr.isAnalyzed_, and com.cloudera.impala.analysis.Expr.isLiteral().

Function com.cloudera.impala.analysis.Expr.getBuiltinFunction	(	Analyzer	analyzer,
		String	name,
		Type[]	argTypes,
		CompareMode	mode
	)		throws AnalysisException

inlineprotectedinherited

Looks up in the catalog the builtin for 'name' and 'argTypes'. Returns null if the function is not found.

Definition at line 290 of file Expr.java.

References com.cloudera.impala.catalog.Catalog.BUILTINS_DB, com.cloudera.impala.catalog.Type.INVALID, and impala.name.

Referenced by com.cloudera.impala.analysis.IsNullPredicate.analyze(), com.cloudera.impala.analysis.LikePredicate.analyze(), com.cloudera.impala.analysis.InPredicate.analyze(), com.cloudera.impala.analysis.TimestampArithmeticExpr.analyze(), com.cloudera.impala.analysis.CompoundPredicate.analyze(), com.cloudera.impala.analysis.ArithmeticExpr.analyze(), com.cloudera.impala.analysis.BinaryPredicate.analyze(), and com.cloudera.impala.analysis.CaseExpr.analyze().

List<Expr> com.cloudera.impala.analysis.Expr.getConjuncts ( )

inlineinherited

Gather conjuncts from this expr and return them in a list. A conjunct is an expr that returns a boolean, e.g., Predicates, function calls, SlotRefs, etc. Hence, this method is placed here and not in Predicate.

Definition at line 662 of file Expr.java.

Referenced by com.cloudera.impala.analysis.TableRef.analyzeJoin(), com.cloudera.impala.analysis.StmtRewriter.canEliminate(), com.cloudera.impala.analysis.StmtRewriter.mergeExpr(), com.cloudera.impala.analysis.Analyzer.registerConjuncts(), com.cloudera.impala.analysis.Analyzer.registerOnClauseConjuncts(), and com.cloudera.impala.analysis.StmtRewriter.rewriteWhereClauseSubqueries().

Function com.cloudera.impala.analysis.Expr.getFn ( )

inlineinherited

Definition at line 197 of file Expr.java.

References com.cloudera.impala.analysis.Expr.fn_.

Referenced by com.cloudera.impala.analysis.AnalyticExpr.checkOffset(), com.cloudera.impala.analysis.AnalyticExpr.getOffsetExpr(), and com.cloudera.impala.analysis.AnalyticExpr.standardize().

FunctionName com.cloudera.impala.analysis.FunctionCallExpr.getFnName ( )

inline

Definition at line 204 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.fnName_.

Referenced by com.cloudera.impala.analysis.ExtractFromExpr.analyze(), and com.cloudera.impala.analysis.ExtractFromExpr.toSqlImpl().

String com.cloudera.impala.analysis.FunctionCallExpr.getFunctionNotFoundError ( Type[] argTypes )

inlineprotected

Definition at line 231 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.fnName_, com.cloudera.impala.analysis.FunctionName.getFunction(), com.cloudera.impala.analysis.FunctionName.isBuiltin(), com.cloudera.impala.analysis.FunctionParams.isDistinct(), com.cloudera.impala.analysis.FunctionParams.isStar(), com.cloudera.impala.analysis.FunctionCallExpr.params_, and com.cloudera.impala.analysis.Expr.toSql().

Referenced by com.cloudera.impala.analysis.FunctionCallExpr.analyze().

ExprId com.cloudera.impala.analysis.Expr.getId ( )

inlineinherited

Definition at line 186 of file Expr.java.

References com.cloudera.impala.analysis.Expr.id_.

Referenced by com.cloudera.impala.analysis.Analyzer.canEvalPredicate(), com.cloudera.impala.analysis.Analyzer.getBoundPredicates(), com.cloudera.impala.analysis.SlotRef.getIdsHelper(), com.cloudera.impala.analysis.Analyzer.registerConjunct(), com.cloudera.impala.analysis.SlotRef.toString(), and com.cloudera.impala.analysis.SlotRef.toThrift().

void com.cloudera.impala.analysis.Expr.getIds	(	List< TupleId >	tupleIds,
		List< SlotId >	slotIds
	)

inlineinherited

Definition at line 883 of file Expr.java.

References com.cloudera.impala.analysis.Expr.getIdsHelper().

static <CextendsExpr> void com.cloudera.impala.analysis.Expr.getIds	(	List<?extends Expr >	exprs,
		List< TupleId >	tupleIds,
		List< SlotId >	slotIds
	)

inlinestaticinherited

Definition at line 897 of file Expr.java.

void com.cloudera.impala.analysis.Expr.getIdsHelper	(	Set< TupleId >	tupleIds,
		Set< SlotId >	slotIds
	)

inlineprotectedinherited

Definition at line 891 of file Expr.java.

Referenced by com.cloudera.impala.analysis.Expr.getIds().

long com.cloudera.impala.analysis.Expr.getNumDistinctValues ( )

inlineinherited

Definition at line 190 of file Expr.java.

References com.cloudera.impala.analysis.Expr.numDistinctValues_.

Referenced by com.cloudera.impala.analysis.SlotRef.analyze(), com.cloudera.impala.analysis.BinaryPredicate.analyze(), and com.cloudera.impala.analysis.SlotRef.SlotRef().

static long com.cloudera.impala.analysis.Expr.getNumDistinctValues ( List< Expr > exprs )

inlinestaticinherited

Returns the product of the given exprs' number of distinct values or -1 if any of the exprs have an invalid number of distinct values.

Definition at line 502 of file Expr.java.

FunctionParams com.cloudera.impala.analysis.FunctionCallExpr.getParams ( )

inline

Definition at line 170 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.params_.

Type com.cloudera.impala.analysis.Expr.getResolvedWildCardType ( ) throws AnalysisException

inlinepackageinherited

Returns the max resolution type of all the wild card decimal types. Returns null if there are no wild card types.

Definition at line 336 of file Expr.java.

References com.cloudera.impala.catalog.Type.isNull(), com.cloudera.impala.catalog.Type.isWildcardDecimal(), and com.cloudera.impala.analysis.Expr.type_.

Referenced by com.cloudera.impala.analysis.Expr.castForFunctionCall().

Type com.cloudera.impala.analysis.FunctionCallExpr.getReturnType ( )

inline

Definition at line 176 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.Expr.fn_.

double com.cloudera.impala.analysis.Expr.getSelectivity ( )

inlineinherited

Definition at line 189 of file Expr.java.

References com.cloudera.impala.analysis.Expr.selectivity_.

Subquery com.cloudera.impala.analysis.Expr.getSubquery ( )

inlineinherited

Returns the subquery of an expr. Returns null if this expr does not contain a subquery.

TODO: Support predicates with more that one subqueries when we implement the independent subquery evaluation.

Definition at line 1114 of file Expr.java.

Type com.cloudera.impala.analysis.Expr.getType ( )

inlineinherited

Definition at line 188 of file Expr.java.

References com.cloudera.impala.analysis.Expr.type_.

int com.cloudera.impala.analysis.Expr.hashCode ( )

inlineinherited

Definition at line 649 of file Expr.java.

References com.cloudera.impala.analysis.Expr.id_.

Expr com.cloudera.impala.analysis.Expr.ignoreImplicitCast ( )

inlineinherited

Returns child expr if this expr is an implicit cast, otherwise returns 'this'.

Definition at line 1034 of file Expr.java.

References com.cloudera.impala.analysis.Expr.isImplicitCast().

static <CextendsExpr> List<C> com.cloudera.impala.analysis.Expr.intersect	(	List< C >	l1,
		List< C >	l2
	)

inlinestaticinherited

Return the intersection of l1 and l2.599

Definition at line 614 of file Expr.java.

static void com.cloudera.impala.analysis.Expr.intersect	(	Analyzer	analyzer,
		List< Expr >	l1,
		List< Expr >	l2,
		ExprSubstitutionMap	smap,
		List< Expr >	i1,
		List< Expr >	i2
	)

inlinestaticinherited

Compute the intersection of l1 and l2, given the smap, and return the intersecting l1 elements in i1 and the intersecting l2 elements in i2.

Definition at line 626 of file Expr.java.

References com.cloudera.impala.analysis.Expr.equals().

boolean com.cloudera.impala.analysis.Expr.isAggregate ( )

inlineinherited

Definition at line 527 of file Expr.java.

boolean com.cloudera.impala.analysis.FunctionCallExpr.isAggregateFunction ( )

inline

Returns true if this is a call to a non-analytic aggregate function.

Definition at line 184 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.Expr.fn_, and com.cloudera.impala.analysis.FunctionCallExpr.isAnalyticFnCall_.

Referenced by com.cloudera.impala.analysis.FunctionCallExpr.analyze(), com.cloudera.impala.analysis.FunctionCallExpr.isDistinct(), and com.cloudera.impala.analysis.FunctionCallExpr.toThrift().

static com.google.common.base.Predicate<Expr> com.cloudera.impala.analysis.Expr.isAggregatePredicate ( )

inlinestaticinherited

Definition at line 523 of file Expr.java.

References com.cloudera.impala.analysis.Expr.isAggregatePredicate_.

Referenced by com.cloudera.impala.analysis.SelectStmt.analyze(), com.cloudera.impala.analysis.FunctionCallExpr.analyze(), com.cloudera.impala.analysis.SelectStmt.analyzeAggregation(), and com.cloudera.impala.analysis.TableRef.analyzeJoin().

boolean com.cloudera.impala.analysis.Expr.isAuxExpr ( )

inlineinherited

Definition at line 194 of file Expr.java.

References com.cloudera.impala.analysis.Expr.isAuxExpr_.

Referenced by com.cloudera.impala.analysis.Analyzer.hasUnassignedConjuncts().

boolean com.cloudera.impala.analysis.Expr.isBound ( TupleId tid )

inlineinherited

Returns true if expr is fully bound by tid, otherwise false.

Definition at line 845 of file Expr.java.

References com.cloudera.impala.analysis.Expr.isBoundByTupleIds().

Referenced by com.cloudera.impala.analysis.SelectStmt.analyzeAggregation().

boolean com.cloudera.impala.analysis.Expr.isBound ( SlotId slotId )

inlineinherited

Returns true if expr is fully bound by slotId, otherwise false.

Definition at line 862 of file Expr.java.

References com.cloudera.impala.analysis.Expr.isBoundBySlotIds().

static boolean com.cloudera.impala.analysis.Expr.isBound	(	List<?extends Expr >	exprs,
		List< TupleId >	tids
	)

inlinestaticinherited

Definition at line 876 of file Expr.java.

boolean com.cloudera.impala.analysis.Expr.isBoundBySlotIds ( List< SlotId > slotIds )

inlineinherited

Returns true if expr is fully bound by slotIds, otherwise false.

Definition at line 869 of file Expr.java.

Referenced by com.cloudera.impala.analysis.Expr.isBound(), and com.cloudera.impala.planner.HdfsScanNode.prunePartitions().

boolean com.cloudera.impala.analysis.Expr.isBoundByTupleIds ( List< TupleId > tids )

inlineinherited

Returns true if expr is fully bound by tids, otherwise false.

Definition at line 852 of file Expr.java.

Referenced by com.cloudera.impala.analysis.Analyzer.canEvalPredicate(), com.cloudera.impala.planner.AnalyticPlanner.createSortInfo(), com.cloudera.impala.analysis.Expr.isBound(), and com.cloudera.impala.analysis.StmtRewriter.mergeExpr().

boolean com.cloudera.impala.analysis.FunctionCallExpr.isConstant ( )

inline

Aggregate functions are never constant.

Definition at line 222 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.Expr.fn_.

boolean com.cloudera.impala.analysis.FunctionCallExpr.isDistinct ( )

inline

Definition at line 199 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.isAggregateFunction().

boolean com.cloudera.impala.analysis.Expr.isImplicitCast ( )

inlineinherited

Returns true if 'this' is an implicit cast expr.

Definition at line 1042 of file Expr.java.

Referenced by com.cloudera.impala.analysis.Expr.ignoreImplicitCast(), com.cloudera.impala.analysis.Expr.reset(), and com.cloudera.impala.analysis.Expr.substituteImpl().

boolean com.cloudera.impala.analysis.Expr.isLiteral ( )

inlineinherited

Returns: true if this is an instance of LiteralExpr

Definition at line 908 of file Expr.java.

Referenced by com.cloudera.impala.planner.HdfsScanNode.canEvalUsingPartitionMd(), com.cloudera.impala.analysis.CaseExpr.CaseExpr(), and com.cloudera.impala.analysis.Expr.foldConstantChildren().

boolean com.cloudera.impala.analysis.FunctionCallExpr.isMergeAggFn ( )

inline

Definition at line 126 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.isMergeAggFn_.

Referenced by com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr().

boolean com.cloudera.impala.analysis.Expr.isNullLiteral ( )

inlineinherited

Returns: true if this expr is either a null literal or a cast from a null literal.

Definition at line 926 of file Expr.java.

Referenced by com.cloudera.impala.analysis.CaseExpr.CaseExpr().

boolean com.cloudera.impala.analysis.Expr.isRegisteredPredicate ( )

inlineinherited

Definition at line 195 of file Expr.java.

References com.cloudera.impala.analysis.Expr.id_.

Referenced by com.cloudera.impala.planner.SingleNodePlanner.migrateConjunctsToInlineView().

boolean com.cloudera.impala.analysis.FunctionCallExpr.isScalarFunction ( )

inline

Definition at line 171 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.Expr.fn_.

Referenced by com.cloudera.impala.analysis.FunctionCallExpr.analyze().

boolean com.cloudera.impala.analysis.Expr.isScalarSubquery ( )

inlineinherited

Return true if this expr is a scalar subquery.

Definition at line 936 of file Expr.java.

References com.cloudera.impala.analysis.Expr.getType(), and com.cloudera.impala.analysis.Expr.isAnalyzed_.

Referenced by com.cloudera.impala.analysis.StmtRewriter.createJoinConjunct().

static <CextendsExpr> boolean com.cloudera.impala.analysis.Expr.isSubset	(	List< C >	l1,
		List< C >	l2
	)

inlinestaticinherited

Return true if l1 is a subset of l2.

Definition at line 606 of file Expr.java.

Referenced by com.cloudera.impala.planner.DistributedPlanner.createInsertFragment().

boolean com.cloudera.impala.analysis.Expr.isWhereClauseConjunct ( )

inlineinherited

Definition at line 192 of file Expr.java.

References com.cloudera.impala.analysis.Expr.isWhereClauseConjunct_.

Referenced by com.cloudera.impala.analysis.Analyzer.canEvalPredicate(), and com.cloudera.impala.analysis.Analyzer.evalByJoin().

Expr com.cloudera.impala.analysis.Expr.negate ( )

inlineinherited

Negates a boolean Expr.

Definition at line 1102 of file Expr.java.

References com.cloudera.impala.catalog.PrimitiveType.BOOLEAN.

static Expr com.cloudera.impala.analysis.Expr.pushNegationToOperands ( Expr root )

inlinestaticinherited

Pushes negation to the individual operands of a predicate tree rooted at 'root'.

Definition at line 1076 of file Expr.java.

References com.cloudera.impala.analysis.Expr.IS_NOT_PREDICATE, and com.cloudera.impala.analysis.Expr.NEGATE_FN.

static <CextendsExpr> void com.cloudera.impala.analysis.Expr.removeConstants ( List< C > l )

inlinestaticinherited

Removes constant exprs

Definition at line 833 of file Expr.java.

static <CextendsExpr> void com.cloudera.impala.analysis.Expr.removeDuplicates ( List< C > l )

inlinestaticinherited

Removes duplicate exprs (according to equals()).

Definition at line 810 of file Expr.java.

Expr com.cloudera.impala.analysis.Expr.reset ( )

inlineinherited

Resets the internal analysis state of this expr tree. Removes implicit casts.

Definition at line 771 of file Expr.java.

References com.cloudera.impala.analysis.Expr.isImplicitCast(), and com.cloudera.impala.analysis.Expr.resetAnalysisState().

Referenced by com.cloudera.impala.analysis.Expr.resetList().

void com.cloudera.impala.analysis.FunctionCallExpr.resetAnalysisState ( )

inline

Definition at line 129 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.Expr.fn_, com.cloudera.impala.analysis.Expr.isAnalyzed_, and com.cloudera.impala.analysis.FunctionCallExpr.isMergeAggFn_.

static ArrayList<Expr> com.cloudera.impala.analysis.Expr.resetList ( ArrayList< Expr > l )

inlinestaticinherited

Definition at line 780 of file Expr.java.

References com.cloudera.impala.analysis.Expr.reset().

Type com.cloudera.impala.analysis.FunctionCallExpr.resolveDecimalReturnType ( Analyzer analyzer ) throws AnalysisException

inlineprivate

Builtins that return decimals are specified as the wildcard decimal(decimal(*,*)) and the specific decimal can only be determined based on the inputs. We currently don't have a mechanism to specify this with the UDF interface. Until we add that (i.e. allowing UDFs to participate in the planning phase), we will manually resolve the wildcard types for the few functions that need it. This can only be called for functions that return wildcard decimals and the first argument is a wildcard decimal. TODO: this prevents UDFs from using wildcard decimals and is in general not scalable. We should add a prepare_fn() to UDFs for doing this.

Definition at line 270 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.LiteralExpr.create(), com.cloudera.impala.catalog.ScalarType.decimalScale(), com.cloudera.impala.analysis.FunctionCallExpr.fnName_, com.cloudera.impala.analysis.FunctionName.getFunction(), com.cloudera.impala.analysis.NumericLiteral.getLongValue(), com.cloudera.impala.catalog.Type.isWildcardDecimal(), com.cloudera.impala.catalog.ScalarType.MAX_SCALE, and com.cloudera.impala.catalog.ScalarType.type_.

Referenced by com.cloudera.impala.analysis.FunctionCallExpr.analyze().

boolean com.cloudera.impala.analysis.FunctionCallExpr.returnsNonNullOnEmpty ( )

inline

Returns true if this is a call to an aggregate function that returns non-null on an empty input (e.g. count).

Definition at line 193 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.Expr.fn_.

void com.cloudera.impala.analysis.Expr.setId ( ExprId id )

inlineprotectedinherited

Definition at line 187 of file Expr.java.

void com.cloudera.impala.analysis.FunctionCallExpr.setIsAnalyticFnCall ( boolean v )

inline

Definition at line 205 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.isAnalyticFnCall_.

void com.cloudera.impala.analysis.Expr.setIsAuxExpr ( )

inlineinherited

Definition at line 196 of file Expr.java.

References com.cloudera.impala.analysis.Expr.isAuxExpr_.

void com.cloudera.impala.analysis.FunctionCallExpr.setIsInternalFnCall ( boolean v )

inline

Definition at line 206 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.isInternalFnCall_.

void com.cloudera.impala.analysis.Expr.setIsWhereClauseConjunct ( )

inlineinherited

Definition at line 193 of file Expr.java.

References com.cloudera.impala.analysis.Expr.isWhereClauseConjunct_.

void com.cloudera.impala.analysis.Expr.setPrintSqlInParens ( boolean b )

inlineinherited

Definition at line 191 of file Expr.java.

References com.cloudera.impala.analysis.Expr.printSqlInParens_.

Expr com.cloudera.impala.analysis.Expr.substitute	(	ExprSubstitutionMap	smap,
		Analyzer	analyzer,
		boolean	preserveRootType
	)

inlineinherited

Returns an analyzed clone of 'this' with exprs substituted according to smap. Removes implicit casts and analysis state while cloning/substituting exprs within this tree, such that the returned result has minimal implicit casts and types. Expects the analysis of the post-substitution expr to succeed. If smap is null, this function is equivalent to clone(). If preserveRootType is true, the resulting expr tree will be cast if necessary to the type of 'this'.

Definition at line 710 of file Expr.java.

References com.cloudera.impala.analysis.Expr.trySubstitute().

Referenced by com.cloudera.impala.planner.HashJoinNode.init().

Expr com.cloudera.impala.analysis.Expr.substituteImpl	(	ExprSubstitutionMap	smap,
		Analyzer	analyzer
	)		throws AnalysisException

inlineprotectedinherited

Recursive method that performs the actual substitution for try/substitute() while removing implicit casts. Resets the analysis state in all non-SlotRef expressions. Exprs that have non-child exprs which should be affected by substitutions must override this method and apply the substitution to such exprs as well.

Definition at line 745 of file Expr.java.

References com.cloudera.impala.analysis.Expr.isImplicitCast(), and com.cloudera.impala.analysis.Expr.resetAnalysisState().

Referenced by com.cloudera.impala.analysis.BetweenPredicate.substituteImpl().

static ArrayList<Expr> com.cloudera.impala.analysis.Expr.substituteList	(	Iterable<?extends Expr >	exprs,
		ExprSubstitutionMap	smap,
		Analyzer	analyzer,
		boolean	preserveRootTypes
	)

inlinestaticinherited

Definition at line 730 of file Expr.java.

References com.cloudera.impala.analysis.Expr.trySubstituteList().

Referenced by com.cloudera.impala.planner.AnalyticPlanner.createSortGroupPlan(), and com.cloudera.impala.planner.AnalyticPlanner.createSortInfo().

String com.cloudera.impala.analysis.Expr.toSql ( )

inlineinherited

Returns: SQL syntax corresponding to this node.

Implements com.cloudera.impala.analysis.ParseNode.

Definition at line 449 of file Expr.java.

References com.cloudera.impala.analysis.Expr.printSqlInParens_, and com.cloudera.impala.analysis.Expr.toSqlImpl().

static String com.cloudera.impala.analysis.Expr.toSql ( List<?extends Expr > exprs )

inlinestaticinherited

Definition at line 552 of file Expr.java.

String com.cloudera.impala.analysis.FunctionCallExpr.toSqlImpl ( )

inline

Definition at line 148 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.Expr.childrenToSql(), com.cloudera.impala.analysis.FunctionCallExpr.fnName_, com.cloudera.impala.analysis.FunctionParams.isDistinct(), com.cloudera.impala.analysis.FunctionCallExpr.isMergeAggFn_, com.cloudera.impala.analysis.FunctionParams.isStar(), com.cloudera.impala.analysis.FunctionCallExpr.label_, and com.cloudera.impala.analysis.FunctionCallExpr.params_.

String com.cloudera.impala.analysis.Expr.toString ( )

inlineinherited

Definition at line 1047 of file Expr.java.

References com.cloudera.impala.analysis.Expr.id_, com.cloudera.impala.analysis.Expr.numDistinctValues_, com.cloudera.impala.analysis.Expr.selectivity_, and com.cloudera.impala.analysis.Expr.type_.

Referenced by com.cloudera.impala.analysis.ExtractFromExpr.analyze(), com.cloudera.impala.analysis.NullLiteral.debugString(), com.cloudera.impala.analysis.NumericLiteral.debugString(), com.cloudera.impala.analysis.CastExpr.debugString(), com.cloudera.impala.analysis.CastExpr.getFnName(), and com.cloudera.impala.analysis.InPredicate.initBuiltins().

void com.cloudera.impala.analysis.FunctionCallExpr.toThrift ( TExprNode msg )

inlineprotected

Definition at line 209 of file FunctionCallExpr.java.

References com.cloudera.impala.analysis.FunctionCallExpr.isAggregateFunction(), com.cloudera.impala.analysis.FunctionCallExpr.isAnalyticFnCall_, and com.cloudera.impala.analysis.FunctionCallExpr.isMergeAggFn_.

static List<TExpr> com.cloudera.impala.analysis.Expr.treesToThrift ( List<?extends Expr > exprs )

inlinestaticinherited

Definition at line 515 of file Expr.java.

Referenced by com.cloudera.impala.planner.HdfsTableSink.toThrift(), com.cloudera.impala.planner.SortNode.toThrift(), and com.cloudera.impala.planner.ExchangeNode.toThrift().

TExpr com.cloudera.impala.analysis.Expr.treeToThrift ( )

inlineinherited

Definition at line 460 of file Expr.java.

References com.cloudera.impala.catalog.Type.BOOLEAN, com.cloudera.impala.catalog.Type.isNull(), com.cloudera.impala.analysis.Expr.treeToThriftHelper(), and com.cloudera.impala.analysis.Expr.type_.

void com.cloudera.impala.analysis.Expr.treeToThriftHelper ( TExpr container )

inlineprotectedinherited

Definition at line 474 of file Expr.java.

References com.cloudera.impala.analysis.Expr.fn_, com.cloudera.impala.catalog.Function.getNumArgs(), com.cloudera.impala.catalog.Function.hasVarArgs(), com.cloudera.impala.analysis.Expr.isAnalyzed_, and com.cloudera.impala.analysis.Expr.toThrift().

Referenced by com.cloudera.impala.analysis.Expr.treeToThrift().

Expr com.cloudera.impala.analysis.Expr.trySubstitute	(	ExprSubstitutionMap	smap,
		Analyzer	analyzer,
		boolean	preserveRootType
	)		throws AnalysisException

inlineinherited

Returns an analyzed clone of 'this' with exprs substituted according to smap. Removes implicit casts and analysis state while cloning/substituting exprs within this tree, such that the returned result has minimal implicit casts and types. Throws if analyzing the post-substitution expr tree failed. If smap is null, this function is equivalent to clone(). If preserveRootType is true, the resulting expr tree will be cast if necessary to the type of 'this'.

Definition at line 689 of file Expr.java.

References com.cloudera.impala.analysis.Expr.clone(), com.cloudera.impala.analysis.Expr.getType(), and com.cloudera.impala.analysis.Expr.type_.

Referenced by com.cloudera.impala.analysis.Expr.substitute().

static ArrayList<Expr> com.cloudera.impala.analysis.Expr.trySubstituteList	(	Iterable<?extends Expr >	exprs,
		ExprSubstitutionMap	smap,
		Analyzer	analyzer,
		boolean	preserveRootTypes
	)		throws AnalysisException

inlinestaticinherited

Definition at line 719 of file Expr.java.

Referenced by com.cloudera.impala.analysis.Expr.substituteList().

void com.cloudera.impala.analysis.Expr.uncheckedCastChild	(	Type	targetType,
		int	childIndex
	)		throws AnalysisException

inlineprotectedinherited

Convert child to to targetType, possibly by inserting an implicit cast, or by returning an altogether new expression, or by returning 'this' with a modified return type'.

Parameters

targetType	type to be cast to
childIndex	index of child to be cast

Definition at line 1024 of file Expr.java.

Referenced by com.cloudera.impala.analysis.IsNullPredicate.analyze(), com.cloudera.impala.analysis.InPredicate.analyze(), com.cloudera.impala.analysis.CastExpr.analyze(), and com.cloudera.impala.analysis.FunctionCallExpr.analyze().

Expr com.cloudera.impala.analysis.Expr.uncheckedCastTo ( Type targetType ) throws AnalysisException

inlineprotectedinherited

Create an expression equivalent to 'this' but returning targetType; possibly by inserting an implicit cast, or by returning an altogether new expression or by returning 'this' with a modified return type'.

Parameters

targetType type to be cast to

Returns: cast expression, or converted literal, should never return null

Exceptions

AnalysisException when an invalid cast is asked for, for example, failure to convert a string literal to a date literal

Definition at line 995 of file Expr.java.

Referenced by com.cloudera.impala.analysis.Expr.castTo().

SlotRef com.cloudera.impala.analysis.Expr.unwrapSlotRef ( boolean implicitOnly )

inlineinherited

If 'this' is a SlotRef or a Cast that wraps a SlotRef, returns that SlotRef. Otherwise returns null.

Definition at line 1060 of file Expr.java.

static void com.cloudera.impala.analysis.FunctionCallExpr.validateScalarFnParams ( FunctionParams params ) throws AnalysisException

inlinestaticpackage

Checks that no special aggregate params are included in 'params' that would be invalid for a scalar function. Analysis of the param exprs is not done.

Definition at line 472 of file FunctionCallExpr.java.

Referenced by com.cloudera.impala.analysis.FunctionCallExpr.analyze().

Member Data Documentation

double com.cloudera.impala.analysis.Expr.DEFAULT_SELECTIVITY = 0.1

staticprotectedinherited

Definition at line 63 of file Expr.java.

Referenced by com.cloudera.impala.analysis.BetweenPredicate.analyze(), com.cloudera.impala.analysis.SlotRef.analyze(), com.cloudera.impala.analysis.IsNullPredicate.analyze(), com.cloudera.impala.analysis.InPredicate.analyze(), and com.cloudera.impala.analysis.BinaryPredicate.analyze().

final int com.cloudera.impala.analysis.Expr.EXPR_CHILDREN_LIMIT = 10000

staticinherited

Definition at line 54 of file Expr.java.

Referenced by com.cloudera.impala.analysis.Expr.analyze(), and com.cloudera.impala.analysis.AnalyzeExprsTest.TestExprChildLimit().

final int com.cloudera.impala.analysis.Expr.EXPR_DEPTH_LIMIT = 1000

staticinherited

Definition at line 56 of file Expr.java.

Referenced by com.cloudera.impala.analysis.Expr.analyze(), com.cloudera.impala.analysis.AnalyzeExprsTest.testFuncExprDepthLimit(), and com.cloudera.impala.analysis.AnalyzeExprsTest.testInfixExprDepthLimit().

Function com.cloudera.impala.analysis.Expr.fn_

protectedinherited

Definition at line 161 of file Expr.java.

final FunctionName com.cloudera.impala.analysis.FunctionCallExpr.fnName_

private

Definition at line 38 of file FunctionCallExpr.java.

ExprId com.cloudera.impala.analysis.Expr.id_

protectedinherited

Definition at line 135 of file Expr.java.

Referenced by com.cloudera.impala.analysis.Expr.debugString(), com.cloudera.impala.analysis.Expr.Expr(), com.cloudera.impala.analysis.Expr.getId(), com.cloudera.impala.analysis.Expr.hashCode(), com.cloudera.impala.analysis.Expr.isRegisteredPredicate(), and com.cloudera.impala.analysis.Expr.toString().

final com.google.common.base.Predicate<Expr> com.cloudera.impala.analysis.Expr.IS_BUILTIN_AGG_FN

staticinherited

Initial value:

=
      new com.google.common.base.Predicate<Expr>() {
        @Override
        public boolean apply(Expr arg) {
          return arg instanceof FunctionCallExpr &&
              ((FunctionCallExpr)arg).getFnName().isBuiltin();
        }
      }

Definition at line 115 of file Expr.java.

Referenced by com.cloudera.impala.analysis.StmtRewriter.createJoinConjunct().

final com.google.common.base.Predicate<Expr> com.cloudera.impala.analysis.Expr.IS_NOT_PREDICATE

staticinherited

Initial value:

=
      new com.google.common.base.Predicate<Expr>() {
        @Override
        public boolean apply(Expr arg) {
          return arg instanceof CompoundPredicate &&
              ((CompoundPredicate)arg).getOp() == CompoundPredicate.Operator.NOT;
        }
      }

Definition at line 75 of file Expr.java.

Referenced by com.cloudera.impala.analysis.Expr.pushNegationToOperands().

final com.google.common.base.Predicate<Expr> com.cloudera.impala.analysis.Expr.IS_OR_PREDICATE

staticinherited

Initial value:

=
      new com.google.common.base.Predicate<Expr>() {
        @Override
        public boolean apply(Expr arg) {
          return arg instanceof CompoundPredicate &&
              ((CompoundPredicate)arg).getOp() == CompoundPredicate.Operator.OR;
        }
      }

Definition at line 85 of file Expr.java.

Referenced by com.cloudera.impala.analysis.StmtRewriter.canExtractCorrelatedPredicates(), and com.cloudera.impala.analysis.StmtRewriter.hasSubqueryInDisjunction().

final com.google.common.base.Predicate<Expr> com.cloudera.impala.analysis.Expr.IS_SCALAR_SUBQUERY

staticinherited

Initial value:

=
      new com.google.common.base.Predicate<Expr>() {
        @Override
        public boolean apply(Expr arg) {
          return arg.isScalarSubquery();
        }
      }

Definition at line 95 of file Expr.java.

Referenced by com.cloudera.impala.analysis.IsNullPredicate.analyze(), and com.cloudera.impala.analysis.StmtRewriter.rewriteWhereClauseSubqueries().

final com.google.common.base.Predicate<Expr> com.cloudera.impala.analysis.Expr.IS_TRUE_LITERAL

staticinherited

Initial value:

=
      new com.google.common.base.Predicate<Expr>() {
        @Override
        public boolean apply(Expr arg) {
          return arg instanceof BoolLiteral && ((BoolLiteral)arg).getValue();
        }
      }

Definition at line 124 of file Expr.java.

Referenced by com.cloudera.impala.analysis.StmtRewriter.canEliminate().

boolean com.cloudera.impala.analysis.FunctionCallExpr.isAnalyticFnCall_ = false

private

Definition at line 40 of file FunctionCallExpr.java.

Referenced by com.cloudera.impala.analysis.FunctionCallExpr.analyze(), com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr(), com.cloudera.impala.analysis.FunctionCallExpr.isAggregateFunction(), com.cloudera.impala.analysis.FunctionCallExpr.setIsAnalyticFnCall(), and com.cloudera.impala.analysis.FunctionCallExpr.toThrift().

boolean com.cloudera.impala.analysis.Expr.isAnalyzed_

protectedinherited

Definition at line 143 of file Expr.java.

boolean com.cloudera.impala.analysis.FunctionCallExpr.isInternalFnCall_ = false

private

Definition at line 41 of file FunctionCallExpr.java.

Referenced by com.cloudera.impala.analysis.FunctionCallExpr.analyze(), com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr(), and com.cloudera.impala.analysis.FunctionCallExpr.setIsInternalFnCall().

final boolean com.cloudera.impala.analysis.FunctionCallExpr.isMergeAggFn_

private

Definition at line 46 of file FunctionCallExpr.java.

Referenced by com.cloudera.impala.analysis.FunctionCallExpr.analyze(), com.cloudera.impala.analysis.FunctionCallExpr.createMergeAggCall(), com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr(), com.cloudera.impala.analysis.FunctionCallExpr.isMergeAggFn(), com.cloudera.impala.analysis.FunctionCallExpr.resetAnalysisState(), com.cloudera.impala.analysis.FunctionCallExpr.toSqlImpl(), and com.cloudera.impala.analysis.FunctionCallExpr.toThrift().

boolean com.cloudera.impala.analysis.Expr.isWhereClauseConjunct_

protectedinherited

Definition at line 144 of file Expr.java.

Referenced by com.cloudera.impala.analysis.Expr.Expr(), com.cloudera.impala.analysis.Analyzer.getBoundPredicates(), com.cloudera.impala.analysis.Expr.isWhereClauseConjunct(), and com.cloudera.impala.analysis.Expr.setIsWhereClauseConjunct().

String com.cloudera.impala.analysis.FunctionCallExpr.label_

private

Definition at line 49 of file FunctionCallExpr.java.

Referenced by com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr(), and com.cloudera.impala.analysis.FunctionCallExpr.toSqlImpl().

final com.google.common.base.Predicate<Expr> com.cloudera.impala.analysis.Expr.NON_NULL_EMPTY_AGG

staticinherited

Initial value:

= new com.google.common.base.Predicate<Expr>() {
        @Override
        public boolean apply(Expr arg) {
          return arg instanceof FunctionCallExpr &&
              ((FunctionCallExpr)arg).returnsNonNullOnEmpty();
        }
      }

Definition at line 106 of file Expr.java.

Referenced by com.cloudera.impala.analysis.StmtRewriter.createJoinConjunct(), and com.cloudera.impala.analysis.StmtRewriter.mergeExpr().

long com.cloudera.impala.analysis.Expr.numDistinctValues_

protectedinherited

Definition at line 157 of file Expr.java.

Referenced by com.cloudera.impala.analysis.Predicate< com.cloudera.impala.analysis.Expr >.analyze(), com.cloudera.impala.analysis.SlotRef.analyze(), com.cloudera.impala.analysis.Expr.computeNumDistinctValues(), com.cloudera.impala.analysis.Expr.Expr(), com.cloudera.impala.analysis.Expr.getNumDistinctValues(), com.cloudera.impala.analysis.LiteralExpr.LiteralExpr(), com.cloudera.impala.analysis.SlotRef.SlotRef(), and com.cloudera.impala.analysis.Expr.toString().

final FunctionParams com.cloudera.impala.analysis.FunctionCallExpr.params_

private

Definition at line 39 of file FunctionCallExpr.java.

Referenced by com.cloudera.impala.analysis.FunctionCallExpr.analyze(), com.cloudera.impala.analysis.FunctionCallExpr.equals(), com.cloudera.impala.analysis.FunctionCallExpr.FunctionCallExpr(), com.cloudera.impala.analysis.FunctionCallExpr.getFunctionNotFoundError(), com.cloudera.impala.analysis.FunctionCallExpr.getParams(), and com.cloudera.impala.analysis.FunctionCallExpr.toSqlImpl().

boolean com.cloudera.impala.analysis.Expr.printSqlInParens_ = false

protectedinherited

Definition at line 148 of file Expr.java.

Referenced by com.cloudera.impala.analysis.Expr.Expr(), com.cloudera.impala.analysis.Expr.setPrintSqlInParens(), and com.cloudera.impala.analysis.Expr.toSql().

double com.cloudera.impala.analysis.Expr.selectivity_

protectedinherited

Definition at line 153 of file Expr.java.

Type com.cloudera.impala.analysis.Expr.type_

protectedinherited

Definition at line 142 of file Expr.java.

The documentation for this class was generated from the following file:

fe/src/main/java/com/cloudera/impala/analysis/FunctionCallExpr.java

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