Examples with SubOpAxis org.sirix.service.xml.xpath.operators.SubOpAxis used on opensource projects

Example 1 with SubOpAxis

use of org.sirix.service.xml.xpath.operators.SubOpAxis in project sirix by sirixdb.

the class PipelineBuilder method addOperatorExpression.

/**
 * Adds an operator expression to the pipeline.
 *
 * @param mTransaction Transaction to operate with.
 * @param mOperator Operator type.
 */
public void addOperatorExpression(final XdmNodeReadTrx mTransaction, final String mOperator) {
    assert getPipeStack().size() >= 1;
    final XdmNodeReadTrx rtx = mTransaction;
    final Axis mOperand2 = getPipeStack().pop().getExpr();
    // the unary operation only has one operator
    final Axis mOperand1 = getPipeStack().pop().getExpr();
    if (getPipeStack().empty() || getExpression().getSize() != 0) {
        addExpressionSingle();
    }
    final Axis axis;
    // TODO: use typeswitch of JAVA 7
    if (mOperator.equals("+")) {
        axis = new AddOpAxis(rtx, mOperand1, mOperand2);
    } else if (mOperator.equals("-")) {
        axis = new SubOpAxis(rtx, mOperand1, mOperand2);
    } else if (mOperator.equals("*")) {
        axis = new MulOpAxis(rtx, mOperand1, mOperand2);
    } else if (mOperator.equals("div")) {
        axis = new DivOpAxis(rtx, mOperand1, mOperand2);
    } else if (mOperator.equals("idiv")) {
        axis = new IDivOpAxis(rtx, mOperand1, mOperand2);
    } else if (mOperator.equals("mod")) {
        axis = new ModOpAxis(rtx, mOperand1, mOperand2);
    } else {
        // TODO: unary operator
        throw new IllegalStateException(mOperator + " is not a valid operator.");
    }
    getExpression().add(axis);
}