Except.java
/*
* SPDX-FileCopyrightText: none
* SPDX-License-Identifier: CC0-1.0
*/
package gov.nist.secauto.metaschema.core.metapath.cst;
import gov.nist.secauto.metaschema.core.metapath.ISequence;
import gov.nist.secauto.metaschema.core.metapath.item.IItem;
import gov.nist.secauto.metaschema.core.util.ObjectUtils;
import java.util.List;
import edu.umd.cs.findbugs.annotations.NonNull;
/**
* The CST node for a Metapath
* <a href="https://www.w3.org/TR/xpath-31/#combining_seq">except
* expression</a>.
*/
public class Except
extends AbstractFilterExpression {
/**
* Construct a new Metapath except expression CST node.
*
* @param left
* an expression indicating the items to filter
* @param right
* an expression indicating the items to omit
*/
public Except(@NonNull IExpression left, @NonNull IExpression right) {
super(left, right);
}
@Override
protected ISequence<?> applyFilterTo(@NonNull ISequence<?> result, @NonNull List<? extends IItem> items) {
return ISequence.of(ObjectUtils.notNull(result.stream()
.filter(item -> !items.contains(item))));
}
@Override
public <RESULT, CONTEXT> RESULT accept(@NonNull IExpressionVisitor<RESULT, CONTEXT> visitor, CONTEXT context) {
return visitor.visitExcept(this, context);
}
}