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/*-
 * ============LICENSE_START=======================================================
 * ONAP - SO
 * ================================================================================
 * Copyright (C) 2017 - 2019 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * Licensed 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.
 * ============LICENSE_END=========================================================
 */

package org.onap.so.client.graphinventory.entities;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.onap.so.client.aai.entities.QueryStep;
import org.onap.so.client.graphinventory.GraphInventoryObjectName;

public class DSLNode implements QueryStep {

    private final String nodeName;
    private final List<DSLNodeKey> nodeKeys;
    private final StringBuilder query = new StringBuilder();
    private boolean output = false;

    public DSLNode() {
        this.nodeName = "";
        this.nodeKeys = new ArrayList<>();

    }

    public DSLNode(GraphInventoryObjectName name) {
        this.nodeName = name.typeName();
        this.nodeKeys = new ArrayList<>();
        query.append(nodeName);
    }

    public DSLNode(GraphInventoryObjectName name, DSLNodeKey... key) {
        this.nodeName = name.typeName();
        this.nodeKeys = Arrays.asList(key);
        query.append(nodeName);
    }

    public DSLNode output() {
        this.output = true;

        return this;
    }

    public DSLNode and(DSLNodeKey... key) {
        this.nodeKeys.addAll(Arrays.asList(key));

        return this;
    }

    @Override
    public String build() {
        StringBuilder result = new StringBuilder(query);
        if (output) {
            result.append("*");
        }
        for (DSLNodeKey key : nodeKeys) {
            result.append(key.build());
        }

        return result.toString();
    }
}