org.eclipse.persistence.jpa.jpql
Class ResolverBuilder

java.lang.Object
  org.eclipse.persistence.jpa.jpql.ResolverBuilder

All Implemented Interfaces:

ExpressionVisitor

Direct Known Subclasses:

DefaultResolverBuilder, EclipseLinkResolverBuilder

public abstract class ResolverBuilder
extends java.lang.Object
implements ExpressionVisitor

This visitor creates a Resolver that gives information about the visited Expression. The actual Resolver will calculate the proper IType as well.

The type of an Expression follows the following rules:

• The type of the query result specified by the SELECT clause of a query is an entity abstract schema type, a state field type, the result of a scalar expression, the result of an aggregate function, the result of a construction operation, or some sequence of these.
• The result type of the SELECT clause is defined by the result types of the select expressions contained in it. When multiple select expressions are used in the SELECT clause, the elements in this result correspond in order to the order of their specification in the SELECT clause and in type to the result types of each of the select expressions.
• The result type of an identification_variable is the type of the entity object or embeddable object to which the identification variable corresponds. The type of an identification_variable that refers to an entity abstract schema type is the type of the entity to which that identification variable corresponds or a subtype as determined by the object/relational mapping.
• The result type of a single_valued_path_expression that is a state_field_path_expression is the same type as the corresponding state field of the entity or embeddable class. If the state field of the entity is a primitive type, the result type is the corresponding object type.
• The result type of a single_valued_path_expression that is a single_valued_object_path_expression is the type of the entity object or embeddable object to which the path expression corresponds. A single_valued_object_path_expression that results in an entity object will result in an entity of the type of the relationship field or the subtype of the relationship field of the entity object as determined by the object/relational mapping.
• The result type of a single_valued_path_expression that is an identification_variable to which the KEY or VALUE function has been applied is determined by the type of the map key or value respectively, as defined by the above rules.
• The result type of a single_valued_path_expression that is an identification_variable to which the ENTRY function has been applied is Map.Entry, where the key and value types of the map entry are determined by the above rules as applied to the map key and map value respectively.
• The result type of a scalar_expression is the type of the scalar value to which the expression evaluates.
• The result type of an entity_type_expression scalar expression is the Java class to which the resulting abstract schema type corresponds.
• The result type of a constructor_expression is the type of the class for which the constructor is defined. The types of the arguments to the constructor are defined by the above rules.

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:

2.4

Author:

Pascal Filion

Since:

2.3

Nested Class Summary

protected static class

ResolverBuilder.CollectionExpressionVisitor This visitor is used to check if the expression visited is a CollectionExpression.

Field Summary

static java.util.regex.Pattern	DOUBLE_REGEXP The Pattern representing the regular expression of a numerical value as a double.
static java.util.regex.Pattern	FLOAT_REGEXP The Pattern representing the regular expression of a numerical value as a float.
static java.util.regex.Pattern	INTEGER_REGEXP The Pattern representing the regular expression of a numerical value as an integer.
static java.util.regex.Pattern	LONG_REGEXP The Pattern representing the regular expression of a numerical value as a long.
protected Resolver	resolver The Resolver for the Expression that was visited.

Constructor Summary

ResolverBuilder(JPQLQueryContext queryContext)
Creates a new ResolverBuilder.

Method Summary

protected Resolver	buildClassNameResolver(java.lang.String typeName) Creates a new {link Resolver} that simply wraps the already determined type by using its fully qualified class name.
protected Resolver	buildClassResolver(java.lang.Class<?> type) Creates a new {link Resolver} that simply wraps the already determined type.
protected ResolverBuilder.CollectionExpressionVisitor	buildCollectionExpressionVisitor() Creates a visitor that collects the CollectionExpression if it's been visited.
protected Resolver	buildCollectionValuedFieldResolver(java.lang.String variableName) Creates a new Resolver for the given collection-valued path expression.
protected Resolver	buildEnumResolver(AbstractPathExpression expression, IType type, java.lang.String enumLiteral) Creates a new Resolver that will resolve the given enum literal.
protected Resolver	buildNullResolver() Creates a new Resolver that is used when nothing can be resolved.
protected Resolver	buildStateFieldResolver(java.lang.String variableName) Creates a new Resolver for the given state field path expression.
protected CollectionExpression	getCollectionExpression(Expression expression) Casts the given Expression to a CollectionExpression if it is actually an object of that type.
protected ResolverBuilder.CollectionExpressionVisitor	getCollectionExpressionVisitor() Returns the visitor that collects the CollectionExpression if it's been visited.
protected DeclarationResolver	getDeclarationResolver() Returns the DeclarationResolver of the current query's declaration.
protected DeclarationResolver	getDeclarationResolver(Expression expression) Returns the DeclarationResolver of the current query's declaration.
protected JPQLQueryContext	getQueryContext() Returns the JPQLQueryContext that contains information related to the JPQL query.
Resolver	getResolver() Returns the current Resolver used to resolve an Expression.
void	visit(AbsExpression expression) Visits the AbsExpression expression.
void	visit(AbstractSchemaName expression) Visits the AbstractSchemaName expression.
void	visit(AdditionExpression expression) Visits the AdditionExpression expression.
void	visit(AllOrAnyExpression expression) Visits the AllOrAnyExpression expression.
void	visit(AndExpression expression) Visits the AndExpression expression.
void	visit(ArithmeticFactor expression) Visits the ArithmeticFactor expression.
void	visit(AvgFunction expression) Visits the AvgFunction expression.
void	visit(BadExpression expression) Visits the BadExpression expression.
void	visit(BetweenExpression expression) Visits the BetweenExpression expression.
void	visit(CaseExpression expression) Visits the CaseExpression expression.
void	visit(CoalesceExpression expression) Visits the CoalesceExpression expression.
void	visit(CollectionExpression expression) Visits the CollectionExpression expression.
void	visit(CollectionMemberDeclaration expression) Visits the CollectionMemberDeclaration expression.
void	visit(CollectionMemberExpression expression) Visits the CollectionMemberExpression expression.
void	visit(CollectionValuedPathExpression expression) Visits the CollectionValuedPathExpression expression.
void	visit(ComparisonExpression expression) Visits the ComparisonExpression expression.
void	visit(ConcatExpression expression) Visits the ConcatExpression expression.
void	visit(ConstructorExpression expression) Visits the ConstructorExpression expression.
void	visit(CountFunction expression) Visits the CountFunction expression.
void	visit(DateTime expression) Visits the DateTime expression.
void	visit(DeleteClause expression) Visits the DeleteClause expression.
void	visit(DeleteStatement expression) Visits the DeleteStatement expression.
void	visit(DivisionExpression expression) Visits the DivisionExpression expression.
void	visit(EmptyCollectionComparisonExpression expression) Visits the EmptyCollectionComparisonExpression expression.
void	visit(EntityTypeLiteral expression) Visits the EntityTypeLiteral expression.
void	visit(EntryExpression expression) Visits the EntryExpression expression.
void	visit(ExistsExpression expression) Visits the ExistsExpression expression.
void	visit(FromClause expression) Visits the FromClause expression.
void	visit(FunctionExpression expression) Visits the FunctionExpression expression.
void	visit(GroupByClause expression) Visits the GroupByClause expression.
void	visit(HavingClause expression) Visits the HavingClause expression.
void	visit(IdentificationVariable expression) Visits the IdentificationVariable expression.
void	visit(IdentificationVariableDeclaration expression) Visits the IdentificationVariableDeclaration expression.
void	visit(IndexExpression expression) Visits the IndexExpression expression.
void	visit(InExpression expression) Visits the InExpression expression.
void	visit(InputParameter expression) Visits the InputParameter expression.
void	visit(Join expression) Visits the Join expression.
void	visit(JPQLExpression expression) Visits the JPQLExpression expression.
void	visit(KeyExpression expression) Visits the KeyExpression expression.
void	visit(KeywordExpression expression) Visits the KeywordExpression expression.
void	visit(LengthExpression expression) Visits the LengthExpression expression.
void	visit(LikeExpression expression) Visits the LikeExpression expression.
void	visit(LocateExpression expression) Visits the LocateExpression expression.
void	visit(LowerExpression expression) Visits the LowerExpression expression.
void	visit(MaxFunction expression) Visits the MaxFunction expression.
void	visit(MinFunction expression) Visits the MinFunction expression.
void	visit(ModExpression expression) Visits the ModExpression expression.
void	visit(MultiplicationExpression expression) Visits the MultiplicationExpression expression.
void	visit(NotExpression expression) Visits the NotExpression expression.
void	visit(NullComparisonExpression expression) Visits the NullComparisonExpression expression.
void	visit(NullExpression expression) Visits the NullExpression expression.
void	visit(NullIfExpression expression) Visits the NullIfExpression expression.
void	visit(NumericLiteral expression) Visits the NumericLiteral expression.
void	visit(ObjectExpression expression) Visits the ObjectExpression expression.
void	visit(OnClause expression) Visits the OnClause expression.
void	visit(OrderByClause expression) Visits the OrderByClause expression.
void	visit(OrderByItem expression) Visits the OrderByItem expression.
void	visit(OrExpression expression) Visits the OrExpression expression.
void	visit(RangeVariableDeclaration expression) Visits the RangeVariableDeclaration expression.
void	visit(ResultVariable expression) Visits the ResultVariable expression.
void	visit(SelectClause expression) Visits the SelectClause expression.
void	visit(SelectStatement expression) Visits the SelectStatement expression.
void	visit(SimpleFromClause expression) Visits the SimpleFromClause expression.
void	visit(SimpleSelectClause expression) Visits the SimpleSelectClause expression.
void	visit(SimpleSelectStatement expression) Visits the SimpleSelectStatement expression.
void	visit(SizeExpression expression) Visits the SizeExpression expression.
void	visit(SqrtExpression expression) Visits the SqrtExpression expression.
void	visit(StateFieldPathExpression expression) Visits the StateFieldPathExpression expression.
void	visit(StringLiteral expression) Visits the StringLiteral expression.
void	visit(SubExpression expression) Visits the SubExpression expression.
void	visit(SubstringExpression expression) Visits the SubstringExpression expression.
void	visit(SubtractionExpression expression) Visits the SubtractionExpression expression.
void	visit(SumFunction expression) Visits the SumFunction expression.
void	visit(TreatExpression expression) Visits the TreatExpression expression.
void	visit(TrimExpression expression) Visits the TrimExpression expression.
void	visit(TypeExpression expression) Visits the TypeExpression expression.
void	visit(UnknownExpression expression) Visits the UnknownExpression expression.
void	visit(UpdateClause expression) Visits the UpdateClause expression.
void	visit(UpdateItem expression) Visits the UpdateItem expression.
void	visit(UpdateStatement expression) Visits the UpdateStatement expression.
void	visit(UpperExpression expression) Visits the UpperExpression expression.
void	visit(ValueExpression expression) Visits the ValueExpression expression.
void	visit(WhenClause expression) Visits the WhenClause expression.
void	visit(WhereClause expression) Visits the WhereClause expression.
protected void	visitArithmeticExpression(ArithmeticExpression expression) Visits the given ArithmeticExpression and create the appropriate Resolver.
protected void	visitCollectionEquivalentExpression(Expression expression, Expression extraExpression) Visits the given Expression and creates a Resolver that will check the type for each of its children.

Methods inherited from class java.lang.Object

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

Field Detail

resolver

protected Resolver resolver

The Resolver for the Expression that was visited.

DOUBLE_REGEXP

public static java.util.regex.Pattern DOUBLE_REGEXP

The Pattern representing the regular expression of a numerical value as a double.

FLOAT_REGEXP

public static java.util.regex.Pattern FLOAT_REGEXP

The Pattern representing the regular expression of a numerical value as a float.

INTEGER_REGEXP

public static java.util.regex.Pattern INTEGER_REGEXP

The Pattern representing the regular expression of a numerical value as an integer.

LONG_REGEXP

public static java.util.regex.Pattern LONG_REGEXP

The Pattern representing the regular expression of a numerical value as a long.

Constructor Detail

ResolverBuilder

public ResolverBuilder(JPQLQueryContext queryContext)

Creates a new ResolverBuilder.

Parameters:

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

Throws:

java.lang.NullPointerException - The JPQLQueryContext cannot be null

Method Detail

buildClassNameResolver

protected Resolver buildClassNameResolver(java.lang.String typeName)

Creates a new {link Resolver} that simply wraps the already determined type by using its fully qualified class name.

Parameters:

typeName - The fully qualified class name of the Java type to wrap with a Resolver

Returns:

A new Resolver

buildClassResolver

protected Resolver buildClassResolver(java.lang.Class<?> type)

Creates a new {link Resolver} that simply wraps the already determined type.

Parameters:

type - The Java type to wrap with a Resolver

Returns:

A new Resolver

buildCollectionExpressionVisitor

protected ResolverBuilder.CollectionExpressionVisitor buildCollectionExpressionVisitor()

Creates a visitor that collects the CollectionExpression if it's been visited.

Returns:

A new ResolverBuilder.CollectionExpressionVisitor

buildCollectionValuedFieldResolver

protected Resolver buildCollectionValuedFieldResolver(java.lang.String variableName)

Creates a new Resolver for the given collection-valued path expression.

Parameters:

variableName - The last segment of the collection-valued path expression

Returns:

A new Resolver that can get the information for a collection-valued path

buildEnumResolver

protected Resolver buildEnumResolver(AbstractPathExpression expression,
                                     IType type,
                                     java.lang.String enumLiteral)

Creates a new Resolver that will resolve the given enum literal.

Parameters:

expression - The Expression that represents the enum literal

type - The IType representing the Enum type

enumLiteral - The fully qualified enum constant

Returns:

The Resolver for an enum literal

buildNullResolver

protected Resolver buildNullResolver()

Creates a new Resolver that is used when nothing can be resolved.

Returns:

A "null" version of a Resolver

buildStateFieldResolver

protected Resolver buildStateFieldResolver(java.lang.String variableName)

Creates a new Resolver for the given state field path expression.

Parameters:

variableName - The last segment of the state field path expression

Returns:

A new Resolver that can get the information for a state field path

getCollectionExpression

protected CollectionExpression getCollectionExpression(Expression expression)

Casts the given Expression to a CollectionExpression if it is actually an object of that type.

Parameters:

expression - The Expression to cast

Returns:

The given Expression if it is a CollectionExpression or null if it is any other object

getCollectionExpressionVisitor

protected ResolverBuilder.CollectionExpressionVisitor getCollectionExpressionVisitor()

Returns the visitor that collects the CollectionExpression if it's been visited.

Returns:

The ResolverBuilder.CollectionExpressionVisitor

See Also:

buildCollectionExpressionVisitor()

getDeclarationResolver

protected DeclarationResolver getDeclarationResolver()

Returns the DeclarationResolver of the current query's declaration. For a SELECT query, it contains the information defined in the FROM clause. For DELETE and UPDATE queries, it contains a single range declaration variable. If the current query is a subquery, then it contains the information defined in the FROM clause.

Returns:

The DeclarationResolver for the current query being visited

getDeclarationResolver

protected DeclarationResolver getDeclarationResolver(Expression expression)

Returns the DeclarationResolver of the current query's declaration. For a SELECT query, it contains the information defined in the FROM clause. For DELETE and UPDATE queries, it contains a single range variable declaration. If the current query is a subquery, then it contains the information defined in the subquery FROM clause.

Parameters:

expression - The Expression that will be used to retrieve its query expression, i.e. either JPQLExpression or SimpleSelectStatement

Returns:

The DeclarationResolver for the current query being visited

getQueryContext

protected JPQLQueryContext getQueryContext()

Returns the JPQLQueryContext that contains information related to the JPQL query.

Returns:

The JPQLQueryContext, which is never null

getResolver

public Resolver getResolver()

Returns the current Resolver used to resolve an Expression.

Returns:

The current Resolver, which should never be null

visit

public void visit(AbsExpression expression)

Visits the AbsExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(AbstractSchemaName expression)

Visits the AbstractSchemaName expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(AdditionExpression expression)

Visits the AdditionExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(AllOrAnyExpression expression)

Visits the AllOrAnyExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(AndExpression expression)

Visits the AndExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(ArithmeticFactor expression)

Visits the ArithmeticFactor expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(AvgFunction expression)

Visits the AvgFunction expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(BadExpression expression)

Visits the BadExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(BetweenExpression expression)

Visits the BetweenExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(CaseExpression expression)

Visits the CaseExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(CoalesceExpression expression)

Visits the CoalesceExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(CollectionExpression expression)

Visits the CollectionExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(CollectionMemberDeclaration expression)

Visits the CollectionMemberDeclaration expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(CollectionMemberExpression expression)

Visits the CollectionMemberExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(CollectionValuedPathExpression expression)

Visits the CollectionValuedPathExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(ComparisonExpression expression)

Visits the ComparisonExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(ConcatExpression expression)

Visits the ConcatExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(ConstructorExpression expression)

Visits the ConstructorExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(CountFunction expression)

Visits the CountFunction expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(DateTime expression)

Visits the DateTime expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(DeleteClause expression)

Visits the DeleteClause expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(DeleteStatement expression)

Visits the DeleteStatement expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(DivisionExpression expression)

Visits the DivisionExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(EmptyCollectionComparisonExpression expression)

Visits the EmptyCollectionComparisonExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(EntityTypeLiteral expression)

Visits the EntityTypeLiteral expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(EntryExpression expression)

Visits the EntryExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(ExistsExpression expression)

Visits the ExistsExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(FromClause expression)

Visits the FromClause expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(FunctionExpression expression)

Visits the FunctionExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(GroupByClause expression)

Visits the GroupByClause expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(HavingClause expression)

Visits the HavingClause expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(IdentificationVariable expression)

Visits the IdentificationVariable expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(IdentificationVariableDeclaration expression)

Visits the IdentificationVariableDeclaration expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(IndexExpression expression)

Visits the IndexExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(InExpression expression)

Visits the InExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(InputParameter expression)

Visits the InputParameter expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(Join expression)

Visits the Join expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(JPQLExpression expression)

Visits the JPQLExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(KeyExpression expression)

Visits the KeyExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(KeywordExpression expression)

Visits the KeywordExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(LengthExpression expression)

Visits the LengthExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(LikeExpression expression)

Visits the LikeExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(LocateExpression expression)

Visits the LocateExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(LowerExpression expression)

Visits the LowerExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(MaxFunction expression)

Visits the MaxFunction expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(MinFunction expression)

Visits the MinFunction expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(ModExpression expression)

Visits the ModExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(MultiplicationExpression expression)

Visits the MultiplicationExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(NotExpression expression)

Visits the NotExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(NullComparisonExpression expression)

Visits the NullComparisonExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(NullExpression expression)

Visits the NullExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(NullIfExpression expression)

Visits the NullIfExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(NumericLiteral expression)

Visits the NumericLiteral expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(ObjectExpression expression)

Visits the ObjectExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(OnClause expression)

Visits the OnClause expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(OrderByClause expression)

Visits the OrderByClause expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(OrderByItem expression)

Visits the OrderByItem expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(OrExpression expression)

Visits the OrExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(RangeVariableDeclaration expression)

Visits the RangeVariableDeclaration expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(ResultVariable expression)

Visits the ResultVariable expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SelectClause expression)

Visits the SelectClause expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SelectStatement expression)

Visits the SelectStatement expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SimpleFromClause expression)

Visits the SimpleFromClause expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SimpleSelectClause expression)

Visits the SimpleSelectClause expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SimpleSelectStatement expression)

Visits the SimpleSelectStatement expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SizeExpression expression)

Visits the SizeExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SqrtExpression expression)

Visits the SqrtExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(StateFieldPathExpression expression)

Visits the StateFieldPathExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(StringLiteral expression)

Visits the StringLiteral expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SubExpression expression)

Visits the SubExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SubstringExpression expression)

Visits the SubstringExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SubtractionExpression expression)

Visits the SubtractionExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SumFunction expression)

Visits the SumFunction expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(TreatExpression expression)

Visits the TreatExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(TrimExpression expression)

Visits the TrimExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(TypeExpression expression)

Visits the TypeExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(UnknownExpression expression)

Visits the UnknownExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The UnknownExpression to visit

visit

public void visit(UpdateClause expression)

Visits the UpdateClause expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The UpdateClause to visit

visit

public void visit(UpdateItem expression)

Visits the UpdateItem expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The UpdateItem to visit

visit

public void visit(UpdateStatement expression)

Visits the UpdateStatement expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The UpdateStatement to visit

visit

public void visit(UpperExpression expression)

Visits the UpperExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The UpperExpression to visit

visit

public void visit(ValueExpression expression)

Visits the ValueExpression expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The ValueExpression to visit

visit

public void visit(WhenClause expression)

Visits the WhenClause expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The WhenClause to visit

visit

public void visit(WhereClause expression)

Visits the WhereClause expression.

Specified by:

visit in interface ExpressionVisitor

Parameters:

expression - The WhereClause to visit

visitArithmeticExpression

protected void visitArithmeticExpression(ArithmeticExpression expression)

Visits the given ArithmeticExpression and create the appropriate Resolver.

Parameters:

expression - The ArithmeticExpression to visit

visitCollectionEquivalentExpression

protected void visitCollectionEquivalentExpression(Expression expression,
                                                   Expression extraExpression)

Visits the given Expression and creates a Resolver that will check the type for each of its children. If the type is the same, then it's the Expression's type; otherwise the type will be Object.

Parameters:

expression - The Expression to calculate the type of its children

extraExpression - This Expression will be resolved, if it's not null and its type will be added to the collection of types