Examples with DupFilterAxis org.sirix.service.xml.xpath.filter.DupFilterAxis used on opensource projects

Example 1 with DupFilterAxis

use of org.sirix.service.xml.xpath.filter.DupFilterAxis in project sirix by sirixdb.

the class ExpressionSingle method add.

/**
 * Adds a new Axis to the expression chain. The first axis that is added has to be stored till a
 * second axis is added. When the second axis is added, it is nested with the first one and builds
 * the execution chain.
 *
 * @param pAx the axis to add
 */
public void add(final Axis pAx) {
    Axis axis = pAx;
    if (isDupOrd(axis)) {
        axis = new DupFilterAxis(axis.getTrx(), axis);
        DupState.nodup = true;
    }
    switch(mNumber) {
        case 0:
            mFirstAxis = axis;
            mNumber++;
            break;
        case 1:
            mExpr = new NestedAxis(mFirstAxis, axis);
            mNumber++;
            break;
        default:
            final Axis cache = mExpr;
            mExpr = new NestedAxis(cache, axis);
    }
}

Example 2 with DupFilterAxis

use of org.sirix.service.xml.xpath.filter.DupFilterAxis in project sirix by sirixdb.

the class ExpressionSingleTest method testDup.

@Test
public void testDup() throws SirixException {
    ExpressionSingle builder = new ExpressionSingle();
    builder.add(new ChildAxis(holder.getReader()));
    builder.add(new DescendantAxis(holder.getReader()));
    assertTrue(builder.getExpr() instanceof NestedAxis);
    builder = new ExpressionSingle();
    builder.add(new ChildAxis(holder.getReader()));
    builder.add(new DescendantAxis(holder.getReader()));
    assertEquals(true, builder.isOrdered());
    assertTrue(builder.getExpr() instanceof NestedAxis);
    builder = new ExpressionSingle();
    builder.add(new ChildAxis(holder.getReader()));
    builder.add(new DescendantAxis(holder.getReader()));
    builder.add(new ChildAxis(holder.getReader()));
    assertEquals(false, builder.isOrdered());
    builder = new ExpressionSingle();
    builder = new ExpressionSingle();
    builder.add(new ChildAxis(holder.getReader()));
    builder.add(new DescendantAxis(holder.getReader()));
    builder.add(new ChildAxis(holder.getReader()));
    builder.add(new ParentAxis(holder.getReader()));
    assertEquals(true, builder.isOrdered());
    builder = new ExpressionSingle();
    builder.add(new ChildAxis(holder.getReader()));
    builder.add(new DescendantAxis(holder.getReader()));
    builder.add(new FollowingSiblingAxis(holder.getReader()));
    assertEquals(false, builder.isOrdered());
    builder = new ExpressionSingle();
    builder.add(new UnionAxis(holder.getReader(), new DescendantAxis(holder.getReader()), new ParentAxis(holder.getReader())));
    assertEquals(false, builder.isOrdered());
    assertTrue(builder.getExpr() instanceof DupFilterAxis);
}

Example 3 with DupFilterAxis

use of org.sirix.service.xml.xpath.filter.DupFilterAxis in project sirix by sirixdb.

the class PipelineBuilder method addUnionExpression.

/**
 * Adds a union expression to the pipeline.
 *
 * @param mTransaction Transaction to operate with.
 */
public void addUnionExpression(final XdmNodeReadTrx mTransaction) {
    assert getPipeStack().size() >= 2;
    final Axis mOperand2 = getPipeStack().pop().getExpr();
    final Axis mOperand1 = getPipeStack().pop().getExpr();
    if (getPipeStack().empty() || getExpression().getSize() != 0) {
        addExpressionSingle();
    }
    getExpression().add(new DupFilterAxis(mTransaction, new UnionAxis(mTransaction, mOperand1, mOperand2)));
}