Examples of JPQLExpression

org.eclipse.persistence.jpa.internal.jpql.parser.JPQLExpression

A JPQL expression is the parsed tree representation of a Java Persistence query. The parser supports version 1.0 and 2.0 of the JPA specification.

A JPQL statement may be either a SELECT statement, an UPDATE statement, or a DELETE FROM statement.

BNF:

QL_statement ::= {@link SelectStatement select_statement} |{@link UpdateStatement update_statement} |{@link DeleteStatement delete_statement}

@version 2.3 @since 2.3 @author Pascal Filion

org.eclipse.persistence.jpa.jpql.parser.JPQLExpression

A JPQLExpression is the root of the parsed tree representation of a JPQL query. The query is parsed based on what was registered in the {@link JPQLGrammar}'s {@link ExpressionRegistry}.

A JPQL statement may be either a SELECT statement, an UPDATE statement, or a DELETE FROM statement.

BNF:

QL_statement ::= {@link SelectStatement select_statement} |{@link UpdateStatement update_statement} |{@link DeleteStatement delete_statement}

It is possible to parse a portion of a JPQL query. The ID of the JPQLQueryBNF is used to parse that portion and {@link #getQueryStatement()} then returns only the parsed tree representationof that JPQL fragment. @version 2.4.2 @since 2.3 @author Pascal Filion

   * setting the {@link IQuery}.
   */
  protected void initializeRoot() {


    if (jpqlExpression == null) {
      jpqlExpression = new JPQLExpression(query.getExpression(), jpqlGrammar, tolerant);
    }


    currentQuery = jpqlExpression;
    contexts.put(currentQuery, this);
  }

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Examples of JPQLExpression

Examples of org.eclipse.persistence.jpa.jpql.parser.JPQLExpression