org.eclipse.persistence.jpa.jpql.tools
Class EclipseLinkSemanticValidator

java.lang.Object
  org.eclipse.persistence.jpa.jpql.parser.AnonymousExpressionVisitor
      org.eclipse.persistence.jpa.jpql.AbstractValidator
          org.eclipse.persistence.jpa.jpql.AbstractSemanticValidator
              org.eclipse.persistence.jpa.jpql.AbstractEclipseLinkSemanticValidator
                  org.eclipse.persistence.jpa.jpql.tools.EclipseLinkSemanticValidator

All Implemented Interfaces:

EclipseLinkExpressionVisitor, ExpressionVisitor

public class EclipseLinkSemanticValidator
extends AbstractEclipseLinkSemanticValidator

This validator is responsible to gather the problems found in a JPQL query by validating the content to make sure it is semantically valid for EclipseLink. The grammar is not validated by this visitor.

For instance, the function AVG accepts a state field path. The property it represents has to be of numeric type. AVG(e.name) is parsable but is not semantically valid because the type of name is a string (the property signature is: "private String name").

Note: EclipseLink does not validate types, but leaves it to the database. This is because some databases such as Oracle allow different types to different functions and perform implicit type conversion. i.e. CONCAT('test', 2) returns 'test2'. Also the FUNC function has an unknown type, so should be allowed with any function.

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.

Version:

2.5

See Also:

EclipseLinkGrammarValidator

Author:

Pascal Filion

Since:

2.4

Nested Class Summary

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

AbstractEclipseLinkSemanticValidator.EclipseLinkOwningClauseVisitor, AbstractEclipseLinkSemanticValidator.SubquerySelectItemCalculator, AbstractEclipseLinkSemanticValidator.TableExpressionVisitor, AbstractEclipseLinkSemanticValidator.TopLevelFirstDeclarationVisitor

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

AbstractSemanticValidator.CollectionValuedPathExpressionVisitor, AbstractSemanticValidator.ComparingEntityTypeLiteralVisitor, AbstractSemanticValidator.ComparisonExpressionVisitor, AbstractSemanticValidator.FirstDeclarationVisitor, AbstractSemanticValidator.PathType, AbstractSemanticValidator.StateFieldPathExpressionVisitor, AbstractSemanticValidator.SubqueryFirstDeclarationVisitor

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

Field Summary

Fields inherited from class org.eclipse.persistence.jpa.jpql.AbstractSemanticValidator

collectionValuedPathExpressionVisitor, helper, registerIdentificationVariable, stateFieldPathExpressionVisitor, usedIdentificationVariables, virtualIdentificationVariableFinder

Constructor Summary

EclipseLinkSemanticValidator(JPQLQueryContext queryContext)
Deprecated. Use EclipseLinkSemanticValidator(JPQLQueryContext, EclipseLinkSemanticValidatorExtension)

EclipseLinkSemanticValidator(JPQLQueryContext queryContext, EclipseLinkSemanticValidatorExtension extension)
Creates a new EclipseLinkSemanticValidator.

EclipseLinkSemanticValidator(SemanticValidatorHelper helper, EclipseLinkSemanticValidatorExtension extension)
Creates a new EclipseLinkSemanticValidator.

Method Summary

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

buildLiteralVisitor, buildOwningClauseVisitor, buildSubquerySelectItemCalculator, buildTableExpressionVisitor, buildTopLevelFirstDeclarationVisitor, getDeclaration, getExtension, getSubquerySelectItemCalculator, getTableExpressionVisitor, isTableExpression, selectClausePathExpressionPathType, subquerySelectItemCount, validateFunctionExpression, validateInExpression, validateRangeVariableDeclarationRootObject, validateThirdPartyStateFieldPathExpression, validPathExpressionTypeForInExpression, validPathExpressionTypeForStringExpression, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

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

buildComparingEntityTypeLiteralVisitor, buildSubqueryFirstDeclarationVisitor, dispose, findVirtualIdentificationVariable, getCollectionValuedPathExpression, getCollectionValuedPathExpressionVisitor, getComparingEntityTypeLiteralVisitor, getComparisonExpressionVisitor, getGrammar, getStateFieldPathExpression, getStateFieldPathExpressionVisitor, getVirtualIdentificationVariableFinder, initialize, isComparingEntityTypeLiteral, isIdentificationVariableDeclaredAfter, isIdentificationVariableValidInComparison, isOrderComparison, isValid, subqueryFirstDeclarationVisitor, topLevelFirstDeclarationVisitor, updateStatus, validateAbsExpression, validateAbstractFromClause, validateAbstractSchemaName, validateAdditionExpression, validateAllOrAnyExpression, validateAndExpression, validateArithmeticExpression, validateArithmeticExpression, validateAvgFunction, validateBetweenExpression, validateCaseExpression, validateCoalesceExpression, validateCollectionMemberDeclaration, validateCollectionMemberExpression, validateCollectionValuedPathExpression, validateComparisonExpression, validateConcatExpression, validateConstructorExpression, validateCountFunction, validateDateTime, validateDeleteClause, validateDeleteStatement, validateDivisionExpression, validateEntityTypeLiteral, validateEntryExpression, validateExistsExpression, validateFirstDeclaration, validateFromClause, validateFunctionPathExpression, validateFunctionPathExpression, validateGroupByClause, validateHavingClause, validateIdentificationVariable, validateIdentificationVariable, validateIdentificationVariableDeclaration, validateIdentificationVariables, validateIndexExpression, validateJoin, validateJoinsIdentificationVariable, validateKeyExpression, validateLengthExpression, validateLikeExpression, validateLocateExpression, validateLowerExpression, validateMaxFunction, validateMinFunction, validateModExpression, validateMultiplicationExpression, validateNotExpression, validateNullComparisonExpression, validateNullIfExpression, validateObjectExpression, validateOnClause, validateOrderByClause, validateOrderByItem, validateOrExpression, validateRangeVariableDeclaration, validateResultVariable, validateSelectClause, validateSelectStatement, validateSimpleFromClause, validateSimpleSelectClause, validateSimpleSelectStatement, validateSizeExpression, validateSqrtExpression, validateStateFieldPathExpression, validateSubstringExpression, validateSubtractionExpression, validateSumFunction, validateTreatExpression, validateTrimExpression, validateTypeExpression, validateUpdateClause, validateUpdateItem, validateUpdateStatement, validateUpperExpression, validateValueExpression, validateWhenClause, validateWhereClause, 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

Methods inherited from interface org.eclipse.persistence.jpa.jpql.parser.ExpressionVisitor

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

Constructor Detail

EclipseLinkSemanticValidator

@Deprecated
public EclipseLinkSemanticValidator(JPQLQueryContext queryContext)

Deprecated. Use EclipseLinkSemanticValidator(JPQLQueryContext, EclipseLinkSemanticValidatorExtension)

Creates a new EclipseLinkSemanticValidator.

Parameters:

queryContext - The context used to query information about the JPQL query

Throws:

java.lang.NullPointerException - The given JPQLQueryContext cannot be null

EclipseLinkSemanticValidator

public EclipseLinkSemanticValidator(JPQLQueryContext queryContext,
                                    EclipseLinkSemanticValidatorExtension extension)

Creates a new EclipseLinkSemanticValidator.

Parameters:

queryContext - The context used to query information about the JPQL query

extension - The following extension can be used to give access to non-JPA metadata artifacts, such as database tables and columns

Throws:

java.lang.NullPointerException - The given JPQLQueryContext cannot be null

EclipseLinkSemanticValidator

public EclipseLinkSemanticValidator(SemanticValidatorHelper helper,
                                    EclipseLinkSemanticValidatorExtension extension)

Creates a new EclipseLinkSemanticValidator.

Parameters:

helper - The given helper allows this validator to access the JPA artifacts without using Hermes SPI

extension - The following extension can be used to give access to non-JPA metadata artifacts, such as database tables and columns

Throws:

java.lang.NullPointerException - The given SemanticValidatorHelper cannot be null