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org.eclipse.persistence.jpa.internal.jpql
Class ContentAssistVisitor.AbstractWhereClauseSelectStatementHelper<T extends AbstractSelectStatement>

java.lang.Object
org.eclipse.persistence.jpa.internal.jpql.ContentAssistVisitor.AbstractWhereClauseSelectStatementHelper<T>

All Implemented Interfaces:

ContentAssistVisitor.SelectStatementHelper<T,WhereClause>

Direct Known Subclasses:

ContentAssistVisitor.SimpleWhereClauseSelectStatementHelper, ContentAssistVisitor.WhereClauseSelectStatementHelper

Enclosing class:

ContentAssistVisitor

private abstract class ContentAssistVisitor.AbstractWhereClauseSelectStatementHelper<T extends AbstractSelectStatement>

extends java.lang.Object

implements ContentAssistVisitor.SelectStatementHelper<T,WhereClause>

Constructor Summary

private

ContentAssistVisitor.AbstractWhereClauseSelectStatementHelper()

Method Summary

void	addClauseProposal() Adds the JPQL identifier of the clause being scanned by this helper.
WhereClause	getClause(AbstractSelectStatement expression) Returns the clause being scanned by this helper.
Expression	getClauseExpression(WhereClause clause) Returns the clause's expression.
boolean	hasClause(AbstractSelectStatement expression) Determines whether the clause exists in the parsed tree.
boolean	hasClauseExpression(WhereClause clause) Determines whether the clause's expression exists in the parsed tree.
boolean	hasSpaceAfterClause(AbstractSelectStatement expression) Determines whether there is a space (owned by the SELECT statement) after the clause being scanned by this helper.
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.internal.jpql.ContentAssistVisitor.SelectStatementHelper

appendNextClauseProposals, getNextHelper, getPreviousHelper

Constructor Detail

ContentAssistVisitor.AbstractWhereClauseSelectStatementHelper

private ContentAssistVisitor.AbstractWhereClauseSelectStatementHelper()

Method Detail

addClauseProposal

public void addClauseProposal()

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

Specified by:

addClauseProposal in interface ContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,WhereClause>

getClause

public WhereClause getClause(AbstractSelectStatement expression)

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

Specified by:

getClause in interface ContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,WhereClause>

Parameters:

expression - The AbstractSelectStatement being visited

Returns:

The clause being scanned

getClauseExpression

public Expression getClauseExpression(WhereClause clause)

Returns the clause's expression.

Specified by:

getClauseExpression in interface ContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,WhereClause>

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 ContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,WhereClause>

Parameters:

expression - The AbstractSelectStatement being visited

Returns:

true if the clause has been parsed; false otherwise

hasClauseExpression

public boolean hasClauseExpression(WhereClause clause)

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

Specified by:

hasClauseExpression in interface ContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,WhereClause>

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

hasSpaceAfterClause

public boolean hasSpaceAfterClause(AbstractSelectStatement expression)

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

Specified by:

hasSpaceAfterClause in interface ContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,WhereClause>

Parameters:

expression - The AbstractSelectStatement being visited

Returns:

true if a space follows the clause; false otherwise

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 ContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,WhereClause>

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 ContentAssistVisitor.SelectStatementHelper<T extends AbstractSelectStatement,WhereClause>

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

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