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java.lang.Objectorg.eclipse.persistence.jpa.jpql.parser.AbstractExpression
org.eclipse.persistence.jpa.jpql.parser.AbstractEncapsulatedExpression
org.eclipse.persistence.jpa.jpql.parser.AbstractSingleEncapsulatedExpression
org.eclipse.persistence.jpa.jpql.parser.TypeExpression
public final class TypeExpression
An entity type expression can be used to restrict query polymorphism. The TYPE operator returns the exact type of the argument.
Part of JPA 2.0.
type_discriminator ::= TYPE(identification_variable |
single_valued_object_path_expression |
input_parameter)
| Field Summary |
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| Fields inherited from class org.eclipse.persistence.jpa.jpql.parser.AbstractExpression |
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COMMA, DOT, DOUBLE_QUOTE, LEFT_CURLY_BRACKET, LEFT_PARENTHESIS, NOT_DEFINED, RIGHT_CURLY_BRACKET, RIGHT_PARENTHESIS, SINGLE_QUOTE, SPACE, UNDERSCORE |
| Constructor Summary | |
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TypeExpression(AbstractExpression parent)
Creates a new TypeExpression. |
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| Method Summary | |
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void |
accept(ExpressionVisitor visitor)
Visits this Expression by the given visitor. |
java.lang.String |
getEncapsulatedExpressionQueryBNFId()
Returns the BNF used to parse the encapsulated expression. |
JPQLQueryBNF |
getQueryBNF()
Returns the BNF of this Expression. |
protected AbstractExpression |
parse(WordParser wordParser,
java.lang.String queryBNFId,
boolean tolerant)
Parses the given text by using the specified BNF. |
| Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.AbstractSingleEncapsulatedExpression |
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acceptChildren, addChildrenTo, addOrderedEncapsulatedExpressionTo, findQueryBNF, getExpression, hasEncapsulatedExpression, hasExpression, parseEncapsulatedExpression, removeEncapsulatedExpression, setExpression, toParsedTextEncapsulatedExpression |
| Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.AbstractEncapsulatedExpression |
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addOrderedChildrenTo, areLogicalIdentifiersSupported, getActualIdentifier, getIdentifier, hasLeftParenthesis, hasRightParenthesis, hasSpaceAfterIdentifier, isParsingComplete, parse, shouldParseRightParenthesis, toParsedText |
| Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
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public TypeExpression(AbstractExpression parent)
TypeExpression.
parent - The parent of this expression| Method Detail |
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public void accept(ExpressionVisitor visitor)
Expression by the given visitor.
visitor - The ExpressionVisitor to visit this objectpublic java.lang.String getEncapsulatedExpressionQueryBNFId()
getEncapsulatedExpressionQueryBNFId in class AbstractSingleEncapsulatedExpressionpublic JPQLQueryBNF getQueryBNF()
Expression.
JPQLQueryBNF, which represents the grammar of this Expressionprotected AbstractExpression parse(WordParser wordParser, java.lang.String queryBNFId, boolean tolerant)
parse in class AbstractExpressionwordParser - The text to parse based on the current position of the cursorqueryBNFId - The unique identifier of the JPQLQueryBNF that is used to determine
how to parse the text at the current cursor position within the JPQL querytolerant - Determines whether the parsing system should be tolerant, meaning if it should
try to parse invalid or incomplete queries
Expression representing the given sub-query
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