org.eclipse.persistence.jpa.jpql
Class AbstractContentAssistVisitor.AbstractHavingClauseSelectStatementHelper<T extends AbstractSelectStatement>

java.lang.Object
  org.eclipse.persistence.jpa.jpql.AbstractContentAssistVisitor.AbstractHavingClauseSelectStatementHelper<T>

All Implemented Interfaces:

AbstractContentAssistVisitor.SelectStatementHelper<T,HavingClause>

Direct Known Subclasses:

AbstractContentAssistVisitor.HavingClauseSelectStatementHelper, AbstractContentAssistVisitor.SimpleHavingClauseSelectStatementHelper

Enclosing class:

AbstractContentAssistVisitor

protected abstract class AbstractContentAssistVisitor.AbstractHavingClauseSelectStatementHelper<T extends AbstractSelectStatement>
extends java.lang.Object
implements AbstractContentAssistVisitor.SelectStatementHelper<T,HavingClause>

Constructor Summary

protected

AbstractContentAssistVisitor.AbstractHavingClauseSelectStatementHelper()

Method Summary

void	addClauseProposal() Adds the JPQL identifier of the clause being scanned by this helper.
HavingClause	getClause(AbstractSelectStatement expression) Returns the clause being scanned by this helper.
Expression	getClauseExpression(HavingClause clause) Returns the clause's expression.
boolean	hasClause(AbstractSelectStatement expression) Determines whether the clause exists in the parsed tree.
boolean	hasClauseExpression(HavingClause clause) Determines whether the clause's expression exists in the parsed tree.
boolean	hasSpaceBeforeClause(AbstractSelectStatement expression) Determines whether there is a space (owned by the SELECT statement) before the clause being scanned by this helper.
boolean	isClauseExpressionComplete(Expression expression) Determines whether the clause's expression is complete or incomplete.

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.AbstractContentAssistVisitor.SelectStatementHelper

appendNextClauseProposals, getNextHelper, getPreviousHelper, hasSpaceAfterClause

Constructor Detail

AbstractContentAssistVisitor.AbstractHavingClauseSelectStatementHelper

protected AbstractContentAssistVisitor.AbstractHavingClauseSelectStatementHelper()

Method Detail

addClauseProposal

public void addClauseProposal()

Adds the JPQL identifier of the clause being scanned by this helper.

Specified by:

addClauseProposal in interface AbstractContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,HavingClause>

getClause

public HavingClause getClause(AbstractSelectStatement expression)

Returns the clause being scanned by this helper. It is safe to type cast the clause because AbstractContentAssistVisitor.SelectStatementHelper.hasClause(AbstractSelectStatement) is called before this one.

Specified by:

getClause in interface AbstractContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,HavingClause>

Parameters:

expression - The AbstractSelectStatement being visited

Returns:

The clause being scanned

getClauseExpression

public Expression getClauseExpression(HavingClause clause)

Returns the clause's expression.

Specified by:

getClauseExpression in interface AbstractContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,HavingClause>

Parameters:

clause - The AbstractSelectStatement being visited

Returns:

The clause's expression

hasClause

public boolean hasClause(AbstractSelectStatement expression)

Determines whether the clause exists in the parsed tree.

Specified by:

hasClause in interface AbstractContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,HavingClause>

Parameters:

expression - The AbstractSelectStatement being visited

Returns:

true if the clause has been parsed; false otherwise

hasClauseExpression

public boolean hasClauseExpression(HavingClause clause)

Determines whether the clause's expression exists in the parsed tree.

Specified by:

hasClauseExpression in interface AbstractContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,HavingClause>

Parameters:

clause - The clause being scanned

Returns:

true if the clause has its expression or a portion of it parsed; false if nothing was parsed

hasSpaceBeforeClause

public boolean hasSpaceBeforeClause(AbstractSelectStatement expression)

Determines whether there is a space (owned by the SELECT statement) before the clause being scanned by this helper.

Specified by:

hasSpaceBeforeClause in interface AbstractContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,HavingClause>

Parameters:

expression - The AbstractSelectStatement being visited

Returns:

true if a space precedes the clause; false otherwise

isClauseExpressionComplete

public boolean isClauseExpressionComplete(Expression expression)

Determines whether the clause's expression is complete or incomplete.

Specified by:

isClauseExpressionComplete in interface AbstractContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,HavingClause>

Parameters:

expression - The clause's expression to verify its completeness

Returns:

true if the Expression is complete based on its content versus what the grammar expects; false otherwise