sparksoniq.jsoniq.compiler.translator.expr.flowr.CountClause Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Authors: Stefan Irimescu, Can Berker Cikis
 *
 */

package sparksoniq.jsoniq.compiler.translator.expr.flowr;

import sparksoniq.jsoniq.compiler.translator.expr.ExpressionOrClause;
import sparksoniq.jsoniq.compiler.translator.expr.primary.VariableReference;
import sparksoniq.jsoniq.compiler.translator.metadata.ExpressionMetadata;
import sparksoniq.semantics.visitor.AbstractExpressionOrClauseVisitor;

import java.util.Collections;
import java.util.List;

public class CountClause extends FlworClause {
    private VariableReference countClauseVar;

    public CountClause(VariableReference countClauseVar, ExpressionMetadata metadata) {
        super(FLWOR_CLAUSES.COUNT, metadata);
        this.countClauseVar = countClauseVar;
    }

    @Override
    public List getDescendants(boolean depthSearch) {
        return getDescendantsFromChildren(Collections.singletonList(countClauseVar), depthSearch);
    }

    @Override
    public  T accept(AbstractExpressionOrClauseVisitor visitor, T argument) {
        return visitor.visitCountClause(this, argument);
    }

    @Override
    public String serializationString(boolean prefix) {
        return "(countClause count " + countClauseVar.serializationString(true) + ")";
    }

    public VariableReference getCountVariable() {
        return countClauseVar;
    }

}