Examples with ForAxis org.sirix.axis.ForAxis used on opensource projects

Example 1 with ForAxis

use of org.sirix.axis.ForAxis in project sirix by sirixdb.

the class PipelineBuilder method addForExpression.

/**
 * Adds a for expression to the pipeline. In case the for expression has more then one for
 * condition, the for expression is converted to a nested for expression with only one for
 * condition each, see the following example: for $a in /a, $b in /b, $c in /c return /d is
 * converted to for $a in /a return for $b in /b return for $c in /c return /d
 *
 * @param mForConditionNum Number of all for conditions of the expression
 */
public void addForExpression(final int mForConditionNum) {
    assert getPipeStack().size() >= (mForConditionNum + 1);
    Axis forAxis = (getPipeStack().pop().getExpr());
    int num = mForConditionNum;
    while (num-- > 0) {
        forAxis = new ForAxis(getPipeStack().pop().getExpr(), forAxis);
    }
    if (getPipeStack().empty() || getExpression().getSize() != 0) {
        addExpressionSingle();
    }
    getExpression().add(forAxis);
}