protected abstract static class AbstractContentAssistVisitor.AbstractSelectClauseCollectionHelper<T extends AbstractSelectClause> extends java.lang.Object implements AbstractContentAssistVisitor.CollectionExpressionHelper<T>
| Modifier | Constructor and Description |
|---|---|
protected |
AbstractContentAssistVisitor.AbstractSelectClauseCollectionHelper(AbstractContentAssistVisitor visitor) |
| Modifier and Type | Method and Description |
|---|---|
void |
addAtTheEndOfChild(T expression,
CollectionExpression collectionExpression,
int index,
boolean hasComma,
boolean virtualSpace)
Adds the proposals because the cursor is at the end of the child at the given position.
|
void |
addIdentifier(T expression,
java.lang.String identifier)
Adds the given JPQL identifier as a valid proposal.
|
void |
addTheBeginningOfChild(T expression,
CollectionExpression collectionExpression,
int index,
boolean hasComma)
Adds the proposals because the cursor is at the beginning of the child
Expression
at the given position. |
CollectionExpression |
buildCollectionExpression(T expression)
Either returns the given
Expression's child, which is already a CollectionExpression
or requests this helper to return a "virtual" CollectionExpression that is wrapping
the single element. |
boolean |
canContinue(T expression,
CollectionExpression collectionExpression,
int index)
Asks this helper if the search can continue even though two child expressions are not
separated by a comma.
|
boolean |
hasDelimiterAfterIdentifier(T expression)
Determines whether a delimiter like a whitespace or an open parenthesis was parsed after
the identifier.
|
int |
maxCollectionSize(T expression)
Returns the maximum number of encapsulated
expressions the Expression
allows. |
int |
preExpressionLength(T expression)
Returns the length of anything that can be defined before the first child.
|
JPQLQueryBNF |
queryBNF(T expression,
int index)
Returns the
JPQLQueryBNF that defines the fragment at the given position. |
protected AbstractContentAssistVisitor.AbstractSelectClauseCollectionHelper(AbstractContentAssistVisitor visitor)
public void addAtTheEndOfChild(T expression, CollectionExpression collectionExpression, int index, boolean hasComma, boolean virtualSpace)
addAtTheEndOfChild in interface AbstractContentAssistVisitor.CollectionExpressionHelper<T extends AbstractSelectClause>expression - The Expression being visitedcollectionExpression - The CollectionExpression is either the child of the
given Expression or a temporary generated one that usually contains a single itemindex - The position of that child in the collection of childrenhasComma - Indicates whether a comma is present before the child at the given position;
if the index is 0, then this is false by defaultvirtualSpace - Indicates if this method is called because the cursor is at the end of
the child at the specified index but by considering there is a virtual space at the end of
that childpublic void addIdentifier(T expression, java.lang.String identifier)
addIdentifier in interface AbstractContentAssistVisitor.CollectionExpressionHelper<T extends AbstractSelectClause>expression - The Expression being visitedidentifier - The JPQL identifier to add as a valid proposalpublic void addTheBeginningOfChild(T expression, CollectionExpression collectionExpression, int index, boolean hasComma)
Expression
at the given position.addTheBeginningOfChild in interface AbstractContentAssistVisitor.CollectionExpressionHelper<T extends AbstractSelectClause>expression - The Expression being visitedcollectionExpression - The CollectionExpression is either the child of the
given Expression or a temporary generated one that usually contains a single item.
This can be null if the position is at the beginningindex - The position of the child that was scannedhasComma - Indicates whether a comma is present before the child at the given position;
if the index is 0, then this is false by defaultpublic CollectionExpression buildCollectionExpression(T expression)
Expression's child, which is already a CollectionExpression
or requests this helper to return a "virtual" CollectionExpression that is wrapping
the single element.buildCollectionExpression in interface AbstractContentAssistVisitor.CollectionExpressionHelper<T extends AbstractSelectClause>expression - The parent of the children to retrievepublic boolean canContinue(T expression, CollectionExpression collectionExpression, int index)
canContinue in interface AbstractContentAssistVisitor.CollectionExpressionHelper<T extends AbstractSelectClause>expression - The Expression being visitedcollectionExpression - The CollectionExpressionindex - The position of the child being scannedtrue if the check can continue even though the previous child was not
separated by a comma; false to stop the checkpublic boolean hasDelimiterAfterIdentifier(T expression)
hasDelimiterAfterIdentifier in interface AbstractContentAssistVisitor.CollectionExpressionHelper<T extends AbstractSelectClause>expression - The Expression being visitedtrue if something is present; false otherwisepublic int maxCollectionSize(T expression)
expressions the Expression
allows. Some expression only allow 2, others 3 and others allow an unlimited number.maxCollectionSize in interface AbstractContentAssistVisitor.CollectionExpressionHelper<T extends AbstractSelectClause>expression - The Expression for which its maximum number of childrenpublic int preExpressionLength(T expression)
DISTINCT " in "AVG(DISTINCT e.name)".preExpressionLength in interface AbstractContentAssistVisitor.CollectionExpressionHelper<T extends AbstractSelectClause>expression - The Expression being visitedpublic JPQLQueryBNF queryBNF(T expression, int index)
JPQLQueryBNF that defines the fragment at the given position.queryBNF in interface AbstractContentAssistVisitor.CollectionExpressionHelper<T extends AbstractSelectClause>expression - The Expression being visitedindex - The position of the element to retrieve the BNF defined in the JPQL grammarJPQLQueryBNF that defines the fragment at the given position