Examples of org.eclipse.persistence.jpa.internal.jpql.parser.AbstractExpression

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

Examples of org.eclipse.persistence.jpa.internal.jpql.parser.AbstractExpression

org.eclipse.persistence.jpa.internal.jpql.parser.AbstractExpression
This is the abstract definition of all the parts used to create the tree hierarchy representing the parsed JPQL query. It has the core of the parsing engine and of the content assist behavior (retrieval of the possible {@link ExpressionFactory expression factories}). @see ExpressionFactory @see StringExpression @version 2.3 @since 2.3 @author Pascal Filion

      if (expression.endsWithComma()) {
        complete = true;
      }


      int lastIndex = expression.childrenSize() - 1;
      AbstractExpression child = (AbstractExpression) expression.getChild(lastIndex);


      // The collection ends with an empty element, that's not complete
      if (isNull(child)) {
        complete = false;
      }
      else {
        int length = expression.toActualText(positionInCollections.peek()).length();


        // The position is at the beginning of the child expression, that means
        // it's complete because we don't have to verify the child expression
        if (corrections.peek() == length) {
          int index = Math.max(0, positionInCollections.peek() - 1);
          complete = expression.hasComma(index);
        }
        // Dig into the child expression to check its status
        else {
          child.accept(this);
        }
      }
    }

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     * {@inheritDoc}
     */
    @Override
    public void visit(CollectionExpression expression) {
      int lastIndex = expression.childrenSize() - 1;
      AbstractExpression child = (AbstractExpression) expression.getChild(lastIndex);
      child.accept(this);
    }

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    return bypassParentSubExpressionVisitor;
  }


  private int calculatePosition(Expression expression, int position) {


    AbstractExpression parent = (AbstractExpression) expression.getParent();


    // Reach the root
    if (parent == null) {
      return position;
    }


    // Traverse the expression until the expression
    for (Iterator<StringExpression> iter = parent.orderedChildren(); iter.hasNext(); ) {
      StringExpression childExpression = iter.next();


      // Continue to calculate the position by going up the hierarchy
      if (childExpression == expression) {
        return calculatePosition(parent, position);

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     * {@inheritDoc}
     */
    @Override
    public void visit(SubExpression expression) {
      if (expression.hasExpression()) {
        AbstractExpression childExpression = (AbstractExpression) expression.getExpression();
        validate(childExpression.getQueryBNF());
      }
    }

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     * {@inheritDoc}
     */
    @Override
    public void visit(SubExpression expression) {
      if (expression.hasExpression()) {
        AbstractExpression childExpression = (AbstractExpression) expression.getExpression();
        validate(childExpression.getQueryBNF());
      }
    }

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    return bypassParentSubExpressionVisitor;
  }


  private int calculatePosition(Expression expression, int position) {


    AbstractExpression parent = (AbstractExpression) expression.getParent();


    // Reach the root
    if (parent == null) {
      return position;
    }


    // Traverse the expression until the expression
    for (Iterator<StringExpression> iter = parent.orderedChildren(); iter.hasNext(); ) {
      StringExpression childExpression = iter.next();


      // Continue to calculate the position by going up the hierarchy
      if (childExpression == expression) {
        return calculatePosition(parent, position);

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     * {@inheritDoc}
     */
    @Override
    public void visit(CollectionExpression expression) {
      int lastIndex = expression.childrenSize() - 1;
      AbstractExpression child = (AbstractExpression) expression.getChild(lastIndex);
      child.accept(this);
    }

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      if (expression.endsWithComma()) {
        complete = true;
      }


      int lastIndex = expression.childrenSize() - 1;
      AbstractExpression child = (AbstractExpression) expression.getChild(lastIndex);


      // The collection ends with an empty element, that's not complete
      if (isNull(child)) {
        complete = false;
      }
      else {
        int length = expression.toActualText(positionInCollections.peek()).length();


        // The position is at the beginning of the child expression, that means
        // it's complete because we don't have to verify the child expression
        if (corrections.peek() == length) {
          int index = Math.max(0, positionInCollections.peek() - 1);
          complete = expression.hasComma(index);
        }
        // Dig into the child expression to check its status
        else {
          child.accept(this);
        }
      }
    }

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Related Classes of org.eclipse.persistence.jpa.internal.jpql.parser.AbstractExpression

org.eclipse.persistence.jpa.internal.jpql.AbstractValidator

org.eclipse.persistence.jpa.internal.jpql.AbstractValidator$ExpressionValidator

org.eclipse.persistence.jpa.internal.jpql.ContentAssistVisitor$CompletenessVisitor

org.eclipse.persistence.jpa.internal.jpql.ContentAssistVisitor$SelectClauseCompletenessVisitor

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