org.eclipse.persistence.jpa.jpql.tools
Class AbstractContentAssistVisitor.AppendableExpressionVisitor

java.lang.Object
  org.eclipse.persistence.jpa.jpql.parser.AnonymousExpressionVisitor
      org.eclipse.persistence.jpa.jpql.tools.AbstractContentAssistVisitor.AppendableExpressionVisitor

All Implemented Interfaces:

ExpressionVisitor

Direct Known Subclasses:

EclipseLinkContentAssistVisitor.AppendableExpressionVisitor

Enclosing class:

AbstractContentAssistVisitor

protected class AbstractContentAssistVisitor.AppendableExpressionVisitor
extends AnonymousExpressionVisitor

This visitor scans the visited Expression and determines if a JPQL identifier can be added ("appended") when the position of the cursor is at the end of the expression.

For instance:

• In "SELECT e, AVG(e.age) F|", F is parsed as a result variable but can also be seen as the first letter for FROM;
• In "SELECT e FROM Employee e WHERE e.name |", the compound identifiers can be added, eg: 'IS NOT NULL', or '=', etc
• In "SELECT e FROM Employee e WHERE e.name NOT B|", only the composite identifier "BETWEEN" and "NOT BETWEEN" can be added because the NOT expression does not have a valid expression: "B" is not a valid expression.
• In "SELECT e FROM Employee e FROM e.age|", the arithmetic and comparison identifiers are allowed, but the logical and compound identifiers.

Field Summary

protected boolean	appendable Flag used to determine if JPQL identifiers can be appended to the expression.
protected AbstractContentAssistVisitor.AppendableType	appendableType The type of the JPQL identifiers can can be possible proposals.
protected boolean	clauseOfItems
protected CollectionExpression	collectionExpression
protected boolean	hasComma
protected int	positionInCollection
protected boolean	subExpression

Constructor Summary

protected

AbstractContentAssistVisitor.AppendableExpressionVisitor() Creates a new AppendableExpressionVisitor.

Method Summary

void	visit(AdditionExpression expression) Visits the AdditionExpression expression.
void	visit(AndExpression expression) Visits the AndExpression 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(ComparisonExpression expression) Visits the ComparisonExpression expression.
void	visit(DateTime expression) Visits the DateTime expression.
void	visit(DeleteClause expression) Visits the DeleteClause expression.
void	visit(DivisionExpression expression) Visits the DivisionExpression expression.
void	visit(EmptyCollectionComparisonExpression expression) Visits the EmptyCollectionComparisonExpression expression.
protected void	visit(Expression expression) Blindly visit the given Expression.
void	visit(FromClause expression) Visits the FromClause 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(KeywordExpression expression) Visits the KeywordExpression 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(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(SimpleFromClause expression) Visits the SimpleFromClause expression.
void	visit(SimpleSelectClause expression) Visits the SimpleSelectClause expression.
void	visit(StateFieldPathExpression expression) Visits the StateFieldPathExpression expression.
void	visit(SubExpression expression) Visits the SubExpression expression.
void	visit(SubtractionExpression expression) Visits the SubtractionExpression expression.
void	visit(WhereClause expression) Visits the WhereClause expression.

Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.AnonymousExpressionVisitor

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 java.lang.Object

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

Field Detail

appendable

protected boolean appendable

Flag used to determine if JPQL identifiers can be appended to the expression.

appendableType

protected AbstractContentAssistVisitor.AppendableType appendableType

The type of the JPQL identifiers can can be possible proposals.

clauseOfItems

protected boolean clauseOfItems

collectionExpression

protected CollectionExpression collectionExpression

hasComma

protected boolean hasComma

positionInCollection

protected int positionInCollection

subExpression

protected boolean subExpression

Constructor Detail

AbstractContentAssistVisitor.AppendableExpressionVisitor

protected AbstractContentAssistVisitor.AppendableExpressionVisitor()

Creates a new AppendableExpressionVisitor.

Method Detail

visit

public void visit(AdditionExpression expression)

Visits the AdditionExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(AndExpression expression)

Visits the AndExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(CollectionExpression expression)

Visits the CollectionExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(CollectionMemberDeclaration expression)

Visits the CollectionMemberDeclaration expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(CollectionMemberExpression expression)

Visits the CollectionMemberExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(ComparisonExpression expression)

Visits the ComparisonExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(DateTime expression)

Visits the DateTime expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(DeleteClause expression)

Visits the DeleteClause expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(DivisionExpression expression)

Visits the DivisionExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(EmptyCollectionComparisonExpression expression)

Visits the EmptyCollectionComparisonExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

protected void visit(Expression expression)

Blindly visit the given Expression.

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(FromClause expression)

Visits the FromClause expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(GroupByClause expression)

Visits the GroupByClause expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(HavingClause expression)

Visits the HavingClause expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(IdentificationVariable expression)

Visits the IdentificationVariable expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(IdentificationVariableDeclaration expression)

Visits the IdentificationVariableDeclaration expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(KeywordExpression expression)

Visits the KeywordExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(MultiplicationExpression expression)

Visits the MultiplicationExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(NotExpression expression)

Visits the NotExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(NullComparisonExpression expression)

Visits the NullComparisonExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(OnClause expression)

Visits the OnClause expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(OrderByClause expression)

Visits the OrderByClause expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(OrderByItem expression)

Visits the OrderByItem expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(OrExpression expression)

Visits the OrExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(RangeVariableDeclaration expression)

Visits the RangeVariableDeclaration expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(ResultVariable expression)

Visits the ResultVariable expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SelectClause expression)

Visits the SelectClause expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SimpleFromClause expression)

Visits the SimpleFromClause expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SimpleSelectClause expression)

Visits the SimpleSelectClause expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(StateFieldPathExpression expression)

Visits the StateFieldPathExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SubExpression expression)

Visits the SubExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(SubtractionExpression expression)

Visits the SubtractionExpression expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The Expression to visit

visit

public void visit(WhereClause expression)

Visits the WhereClause expression.

Specified by:

visit in interface ExpressionVisitor

Overrides:

visit in class AnonymousExpressionVisitor

Parameters:

expression - The WhereClause to visit