AbstractContentAssistVisitor.AppendableExpressionVisitor (EclipseLink 2.4.3, build 'v20150722-6e43db3' API Reference)

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

All Implemented Interfaces:

ExpressionVisitor

Direct Known Subclasses:

EclipseLinkContentAssistVisitor.AppendableExpressionVisitor

Enclosing class:

AbstractContentAssistVisitor
```
protected class AbstractContentAssistVisitor.AppendableExpressionVisitor
extends AbstractContentAssistVisitor.AbstractAppendableExpressionVisitor
```
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

Fields
Modifier and Type	Field and Description
`protected AbstractContentAssistVisitor.AppendableType`	`appendableType` The type of the JPQL identifiers can can be possible proposals.
`protected boolean`	`clauseOfItems` Internal flag indicating if a clause is being visited which can have a collection of children.
`protected CollectionExpression`	`collectionExpression` Caches the visited `CollectionExpression` so a child could use it.
`protected boolean`	`hasComma` When visiting a `CollectionExpression`, this indicates if there is a comma before the child being visited.
`protected int`	`positionInCollection` When visiting a `CollectionExpression`, this indicates the position within that collection of the child being visited.
`protected boolean`	`subExpression` Internal flag indicating the `Expression` being visited is encapsulated by parenthesis.

Fields inherited from class org.eclipse.persistence.jpa.jpql.AbstractContentAssistVisitor.AbstractAppendableExpressionVisitor
appendable

Constructor Summary

Constructors
Modifier Constructor and Description

protected AbstractContentAssistVisitor.AppendableExpressionVisitor()
Creates a new AppendableExpressionVisitor.

Constructors
Modifier	Constructor and Description
`protected`	`AbstractContentAssistVisitor.AppendableExpressionVisitor()` Creates a new `AppendableExpressionVisitor`.

Method Summary

Methods
Modifier and Type	Method and Description
`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.AbstractContentAssistVisitor.AbstractAppendableExpressionVisitor
dispose, isAppendable

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
  - appendableType
```
protected AbstractContentAssistVisitor.AppendableType appendableType
```
    The type of the JPQL identifiers can can be possible proposals.
  - clauseOfItems
```
protected boolean clauseOfItems
```
    Internal flag indicating if a clause is being visited which can have a collection of children.
  - collectionExpression
```
protected CollectionExpression collectionExpression
```
    Caches the visited CollectionExpression so a child could use it.
  - hasComma
```
protected boolean hasComma
```
    When visiting a CollectionExpression, this indicates if there is a comma before the child being visited.
  - positionInCollection
```
protected int positionInCollection
```
    When visiting a CollectionExpression, this indicates the position within that collection of the child being visited.
  - subExpression
```
protected boolean subExpression
```
    Internal flag indicating the Expression being visited is encapsulated by parenthesis.
- 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

Class AbstractContentAssistVisitor.AppendableExpressionVisitor

Field Summary

Fields inherited from class org.eclipse.persistence.jpa.jpql.AbstractContentAssistVisitor.AbstractAppendableExpressionVisitor

Constructor Summary

Method Summary

Methods inherited from class org.eclipse.persistence.jpa.jpql.AbstractContentAssistVisitor.AbstractAppendableExpressionVisitor

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

Methods inherited from class java.lang.Object

Field Detail

appendableType

clauseOfItems

collectionExpression

hasComma

positionInCollection

subExpression

Constructor Detail

AbstractContentAssistVisitor.AppendableExpressionVisitor

Method Detail

visit

visit

visit

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visit

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visit

visit

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visit