Package org.eclipse.persistence.jpa.jpql.tools

Class DefaultGrammarValidator

java.lang.Object

org.eclipse.persistence.jpa.jpql.parser.AnonymousExpressionVisitor

org.eclipse.persistence.jpa.jpql.AbstractValidator

org.eclipse.persistence.jpa.jpql.AbstractGrammarValidator

org.eclipse.persistence.jpa.jpql.tools.DefaultGrammarValidator

All Implemented Interfaces:

ExpressionVisitor

public class DefaultGrammarValidator
extends AbstractGrammarValidator

This validator is responsible to validate a JPQL query grammatically purely based on the JPA specification document.

Version:

2.5

See Also:

JSR 220: Enterprise JavaBeans 3.0, JSR 317: Java Persistence 2.0, JSR 338: Java Persistence 2.1, Provisional API: This interface is part of an interim API that is still under development and expected to change significantly before reaching stability. It is available at this early stage to solicit feedback from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken (repeatedly) as the API evolves.

Author:

Pascal Filion

Since:

2.4

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.persistence.jpa.jpql.AbstractGrammarValidator

AbstractGrammarValidator.AbstractCollectionValidator, AbstractGrammarValidator.AbstractDoubleEncapsulatedExpressionHelper<T extends AbstractDoubleEncapsulatedExpression>, AbstractGrammarValidator.AbstractEncapsulatedExpressionHelper<T extends AbstractEncapsulatedExpression>, AbstractGrammarValidator.AbstractSingleEncapsulatedExpressionHelper<T extends AbstractSingleEncapsulatedExpression>, AbstractGrammarValidator.AbstractTripleEncapsulatedExpressionHelper<T extends AbstractTripleEncapsulatedExpression>, AbstractGrammarValidator.CollectionExpressionVisitor, AbstractGrammarValidator.CollectionSeparatedByCommaValidator, AbstractGrammarValidator.CollectionSeparatedBySpaceValidator, AbstractGrammarValidator.ComparisonExpressionVisitor, AbstractGrammarValidator.DateTimeVisitor, AbstractGrammarValidator.NullExpressionVisitor

Nested classes/interfaces inherited from class org.eclipse.persistence.jpa.jpql.AbstractValidator

AbstractValidator.BypassChildCollectionExpressionVisitor, AbstractValidator.BypassParentSubExpressionVisitor, AbstractValidator.ChildrenCollectorVisitor, AbstractValidator.JPQLQueryBNFValidator, AbstractValidator.NestedArrayVisitor, AbstractValidator.OwningClauseVisitor, AbstractValidator.OwningStatementVisitor, AbstractValidator.SubqueryVisitor

Constructor Summary

Constructors

Constructor	Description
DefaultGrammarValidator(JPQLGrammar jpqlGrammar)	Creates a new DefaultGrammarValidator.

Method Summary

Modifier and Type	Method	Description
protected LiteralVisitor	buildLiteralVisitor()	Creates the visitor that can retrieve some information about various literal.
protected AbstractValidator.OwningClauseVisitor	buildOwningClauseVisitor()	Creates the visitor that traverses the parent hierarchy of any Expression and stops at the first Expression that is a clause.
protected boolean	isJoinFetchIdentifiable()	Determines whether a JOIN FETCH expression can be identified by with an identification variable or not.
protected boolean	isSubqueryAllowedAnywhere()	Determines whether a subquery can be used in any clause of the top-level query.

Methods inherited from class org.eclipse.persistence.jpa.jpql.AbstractGrammarValidator

absExpressionHelper, allOrAnyExpressionHelper, avgFunctionHelper, buildAbsExpressionHelper, buildAllOrAnyExpressionHelper, buildAvgFunctionHelper, buildCoalesceExpressionHelper, buildCollectionExpressionVisitor, buildConcatExpressionHelper, buildCountFunctionHelper, buildDateTimeVisitor, buildEntryExpressionHelper, buildExistsExpressionHelper, buildFunctionExpressionHelper, buildIndexExpressionHelper, buildKeyExpressionHelper, buildLengthExpressionHelper, buildLocateExpressionHelper, buildLowerExpressionHelper, buildMaxFunctionHelper, buildMinFunctionHelper, buildModExpressionHelper, buildNullExpressionVisitor, buildNullIfExpressionHelper, buildObjectExpressionHelper, buildSizeExpressionHelper, buildSqrtExpressionHelper, buildSubstringExpressionHelper, buildSumFunctionHelper, buildTrimExpressionHelper, buildTypeExpressionHelper, buildUpperExpressionHelper, buildValueExpressionHelper, coalesceExpressionHelper, collectionSeparatedByCommaValidator, collectionSeparatedBySpaceValidator, comparisonExpressionVisitor, concatExpressionHelper, countFunctionHelper, dispose, entryExpressionHelper, existsExpressionHelper, functionExpressionHelper, getCollectionExpression, getCollectionExpressionVisitor, getDateTimeVisitor, getGrammar, getHelper, indexExpressionHelper, initialize, isChildOfComparisonExpession, isCollectionExpression, isDateTimeConstant, isInputParameterInValidLocation, isJPA1_0, isJPA2_0, isJPA2_1, isMultipleSubquerySelectItemsAllowed, isNewerThan, isNewerThanOrEqual, isNumericLiteral, isOlderThan, isOlderThanOrEqual, isOwnedByConditionalClause, isOwnedByFromClause, isOwnedBySubFromClause, isValidJavaIdentifier, keyExpressionHelper, lengthExpressionHelper, locateExpressionHelper, lowerExpressionHelper, maxFunctionHelper, minFunctionHelper, modExpressionHelper, nullIfExpressionHelper, objectExpressionHelper, position, registerHelper, sizeExpressionHelper, sqrtExpressionHelper, substringExpressionHelper, sumFunctionHelper, trimExpressionHelper, typeExpressionHelper, upperExpressionHelper, validateAbstractConditionalClause, validateAbstractDoubleEncapsulatedExpression, validateAbstractFromClause, validateAbstractSelectClause, validateAbstractSelectStatement, validateAbstractSingleEncapsulatedExpression, validateAbstractTripleEncapsulatedExpression, validateAggregateFunctionLocation, validateArithmeticExpression, validateCollectionSeparatedByComma, validateCollectionSeparatedBySpace, validateCompoundExpression, validateIdentificationVariableDeclaration, validateIdentifier, validateInputParameters, validateJoins, validateLikeExpressionEscapeCharacter, validateLogicalExpression, validateOwningClause, validatePathExpression, validateSimpleSelectStatement, valueExpressionHelper, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class org.eclipse.persistence.jpa.jpql.AbstractValidator

addProblem, addProblem, addProblem, addProblem, buildChildrenCollector, buildNestedArrayVisitor, buildOwningStatementVisitor, buildProblem, buildSubqueryVisitor, getBypassChildCollectionExpressionVisitor, getBypassParentSubExpressionVisitor, getChildren, getChildrenCollectorVisitor, getExpressionRegistry, getExpressionValidator, getJPAVersion, getJPQLQueryBNFValidator, getJPQLQueryBNFValidator, getLiteralVisitor, getNestedArrayVisitor, getOwningClauseVisitor, getOwningStatementVisitor, getProvider, getProviderVersion, getQueryBNF, getSubqueryVisitor, isNestedArray, isSubquery, isValid, isValid, isValid, isValidWithChildCollectionBypass, isWithinSubquery, isWithinTopLevelQuery, length, literal, nestedArraySize, position, problemsSize, setProblems, visit

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DefaultGrammarValidator

public DefaultGrammarValidator(JPQLGrammar jpqlGrammar)

Creates a new DefaultGrammarValidator.

Parameters:

jpqlGrammar - The JPQLGrammar that defines how the JPQL query was parsed

Method Detail

buildLiteralVisitor

protected LiteralVisitor buildLiteralVisitor()

Creates the visitor that can retrieve some information about various literal.

Specified by:

buildLiteralVisitor in class AbstractValidator

Returns:

A new LiteralVisitor

buildOwningClauseVisitor

protected AbstractValidator.OwningClauseVisitor buildOwningClauseVisitor()

Creates the visitor that traverses the parent hierarchy of any Expression and stops at the first Expression that is a clause.

Specified by:

buildOwningClauseVisitor in class AbstractValidator

Returns:

A new AbstractValidator.OwningClauseVisitor

isJoinFetchIdentifiable

protected boolean isJoinFetchIdentifiable()

Determines whether a JOIN FETCH expression can be identified by with an identification variable or not.

Specified by:

isJoinFetchIdentifiable in class AbstractGrammarValidator

Returns:

true if the expression can have an identification variable; false otherwise

isSubqueryAllowedAnywhere

protected boolean isSubqueryAllowedAnywhere()

Determines whether a subquery can be used in any clause of the top-level query.

Specified by:

isSubqueryAllowedAnywhere in class AbstractGrammarValidator

Returns:

true if a subquery can be defined in any clause; false if it can only be used within the WHERE and HAVING defined by the JPA 1.0 and 2.0 specification document