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java.lang.Objectorg.eclipse.persistence.jpa.jpql.AbstractContentAssistVisitor.ConcatExpressionCollectionHelper
protected class AbstractContentAssistVisitor.ConcatExpressionCollectionHelper
Constructor Summary | |
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protected |
AbstractContentAssistVisitor.ConcatExpressionCollectionHelper()
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Method Summary | |
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void |
addAtTheEndOfChild(ConcatExpression 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(ConcatExpression expression,
java.lang.String identifier)
Adds the given JPQL identifier as a valid proposal. |
void |
addTheBeginningOfChild(ConcatExpression 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(ConcatExpression 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(ConcatExpression 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(ConcatExpression expression)
Determines whether a delimiter like a whitespace or an open parenthesis was parsed after the identifier. |
int |
maxCollectionSize(ConcatExpression expression)
Returns the maximum number of encapsulated expressions the Expression
allows. |
int |
preExpressionLength(ConcatExpression expression)
Returns the length of anything that can be defined before the first child. |
JPQLQueryBNF |
queryBNF(ConcatExpression expression,
int index)
Returns the JPQLQueryBNF that defines the fragment at the given position. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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protected AbstractContentAssistVisitor.ConcatExpressionCollectionHelper()
Method Detail |
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public void addAtTheEndOfChild(ConcatExpression expression, CollectionExpression collectionExpression, int index, boolean hasComma, boolean virtualSpace)
addAtTheEndOfChild
in interface AbstractContentAssistVisitor.CollectionExpressionHelper<ConcatExpression>
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(ConcatExpression expression, java.lang.String identifier)
addIdentifier
in interface AbstractContentAssistVisitor.CollectionExpressionHelper<ConcatExpression>
expression
- The Expression
being visitedidentifier
- The JPQL identifier to add as a valid proposalpublic void addTheBeginningOfChild(ConcatExpression expression, CollectionExpression collectionExpression, int index, boolean hasComma)
Expression
at the given position.
addTheBeginningOfChild
in interface AbstractContentAssistVisitor.CollectionExpressionHelper<ConcatExpression>
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(ConcatExpression 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<ConcatExpression>
expression
- The parent of the children to retrieve
public boolean canContinue(ConcatExpression expression, CollectionExpression collectionExpression, int index)
canContinue
in interface AbstractContentAssistVisitor.CollectionExpressionHelper<ConcatExpression>
expression
- The Expression
being visitedcollectionExpression
- The CollectionExpression
index
- The position of the child being scanned
true
if the check can continue even though the previous child was not
separated by a comma; false
to stop the checkpublic boolean hasDelimiterAfterIdentifier(ConcatExpression expression)
hasDelimiterAfterIdentifier
in interface AbstractContentAssistVisitor.CollectionExpressionHelper<ConcatExpression>
expression
- The Expression
being visited
true
if something is present; false
otherwisepublic int maxCollectionSize(ConcatExpression expression)
expressions
the Expression
allows. Some expression only allow 2, others 3 and others allow an unlimited number.
maxCollectionSize
in interface AbstractContentAssistVisitor.CollectionExpressionHelper<ConcatExpression>
expression
- The Expression
for which its maximum number of children
public int preExpressionLength(ConcatExpression expression)
DISTINCT
" in "AVG(DISTINCT e.name)
".
preExpressionLength
in interface AbstractContentAssistVisitor.CollectionExpressionHelper<ConcatExpression>
expression
- The Expression
being visited
public JPQLQueryBNF queryBNF(ConcatExpression expression, int index)
JPQLQueryBNF
that defines the fragment at the given position.
queryBNF
in interface AbstractContentAssistVisitor.CollectionExpressionHelper<ConcatExpression>
expression
- The Expression
being visitedindex
- The position of the element to retrieve the BNF defined in the JPQL grammar
JPQLQueryBNF
that defines the fragment at the given position
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EclipseLink 2.4.2, build 'v20130514-5956486' API Reference | ||||||||
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