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

Package org.eclipse.persistence.jpa.jpql.parser

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

org.eclipse.persistence.jpa.jpql.parser.Expression
This is the root interface of the parsed tree representation of a JPQL query. The way a JPQL query is parsed is based on the {@link JPQLGrammar JPQL grammar} used.
Provisional API: This interface is part of an interim API that is still under development and expected to change significantly before reaching stability. It is available at this early stage to solicit feedback from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken (repeatedly) as the API evolves. @see JPQLGrammar @version 2.4.2 @since 2.3 @author Pascal Filion

   * {@inheritDoc}
   */
  @Override
  public void visit(SelectClause expression) {


    Expression selectExpression = expression.getSelectExpression();


    // visit(CollectionExpression) iterates through the children but for a
    // SELECT clause, a CollectionExpression means the result type is Object[]
    CollectionExpression collectionExpression = getCollectionExpression(selectExpression);


    if (collectionExpression != null) {
      type = Object[].class;
    }
    else {
      selectExpression.accept(this);
    }
  }

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      Declaration declaration = new Declaration();
      declaration.declarationExpression  = expression;
      declaration.baseExpression         = expression.getTableExpression();
      declaration.rootPath               = declaration.baseExpression.toParsedText();


      Expression identificationVariable = expression.getIdentificationVariable();
      String variableName = visitDeclaration(expression, identificationVariable);


      if (variableName.length() > 0) {
        declaration.identificationVariable = (IdentificationVariable) identificationVariable;
      }

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     * {@inheritDoc}
     */
    public boolean isClauseComplete(UpdateStatement expression) {


      UpdateClause updateClause = expression.getUpdateClause();
      Expression declaration = updateClause.getRangeVariableDeclaration();
      boolean complete = isValid(declaration, RangeVariableDeclarationBNF.ID);


      if (complete) {
        complete = isComplete(declaration);
      }

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     * {@inheritDoc}
     */
    public boolean isClauseComplete(UpdateStatement expression) {


      UpdateClause updateClause = expression.getUpdateClause();
      Expression declaration = updateClause.getRangeVariableDeclaration();
      boolean complete = isValid(declaration, RangeVariableDeclarationBNF.ID);


      if (complete) {
        complete = isComplete(declaration);
      }

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     * {@inheritDoc}
     */
    public boolean isClauseComplete(DeleteStatement expression) {


      WhereClause whereClause = (WhereClause) expression.getWhereClause();
      Expression condition = whereClause.getConditionalExpression();
      boolean complete = isValid(condition, ConditionalExpressionBNF.ID);


      if (complete) {
        complete = isComplete(condition);
      }

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     * {@inheritDoc}
     */
    public boolean isClauseComplete(DeleteStatement expression) {


      WhereClause whereClause = (WhereClause) expression.getWhereClause();
      Expression condition = whereClause.getConditionalExpression();
      boolean complete = isValid(condition, ConditionalExpressionBNF.ID);


      if (complete) {
        complete = isComplete(condition);
      }

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     * {@inheritDoc}
     */
    public boolean isClauseComplete(UpdateStatement expression) {


      WhereClause whereClause = (WhereClause) expression.getWhereClause();
      Expression condition = whereClause.getConditionalExpression();
      boolean complete = isValid(condition, ConditionalExpressionBNF.ID);


      if (complete) {
        complete = isComplete(condition);
      }

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     * {@inheritDoc}
     */
    public boolean isClauseComplete(UpdateStatement expression) {


      WhereClause whereClause = (WhereClause) expression.getWhereClause();
      Expression condition = whereClause.getConditionalExpression();
      boolean complete = isValid(condition, ConditionalExpressionBNF.ID);


      if (complete) {
        complete = isComplete(condition);
      }

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  /**
   * {@inheritDoc}
   */
  public void visit(RegexpExpression expression) {


    Expression patternValue = expression.getPatternValue();
    Expression stringExpression = expression.getStringExpression();


    if (patternValue.isAncestor(inputParameter)) {
      this.expression = expression.getStringExpression();
    }
    else if (stringExpression.isAncestor(inputParameter)) {
      this.expression = expression;
    }
  }

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      // Make sure the first declaration is valid
      if (index == 0) {
        validateFirstDeclaration(expression, declaration, visitor);
      }
      else {
        Expression declarationExpression = declaration.getDeclarationExpression();


        // A JOIN expression does not have a declaration and it should not be traversed here
        if (declarationExpression != null) {
          declarationExpression.accept(this);
        }
      }


      // Check the JOIN expressions in the identification variable declaration
      if (declaration.isRange() && declaration.hasJoins()) {

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Related Classes of org.eclipse.persistence.jpa.jpql.parser.Expression

org.eclipse.persistence.internal.jpa.jpql.ParameterTypeVisitor

org.eclipse.persistence.internal.jpa.jpql.TypeResolver

org.eclipse.persistence.jpa.jpql.AbstractContentAssistVisitor

org.eclipse.persistence.jpa.jpql.AbstractContentAssistVisitor$AbstractConditionalClauseCollectionHelper

org.eclipse.persistence.jpa.jpql.AbstractContentAssistVisitor$AbstractConditionalClauseHelper

org.eclipse.persistence.jpa.jpql.AbstractContentAssistVisitor$AbstractFromClauseStatementHelper

org.eclipse.persistence.jpa.jpql.AbstractContentAssistVisitor$AbstractGroupByClauseStatementHelper

org.eclipse.persistence.jpa.jpql.AbstractContentAssistVisitor$AbstractHavingClauseStatementHelper

org.eclipse.persistence.jpa.jpql.AbstractContentAssistVisitor$AbstractSelectClauseStatementHelper

org.eclipse.persistence.jpa.jpql.AbstractContentAssistVisitor$AbstractWhereClauseSelectStatementHelper

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