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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.aaiclient.client.graphinventory.entities;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.stream.Collectors;
import org.onap.aaiclient.client.aai.entities.QueryStep;
import org.onap.aaiclient.client.graphinventory.GraphInventoryObjectName;
public abstract class DSLNodeBase<T extends DSLNodeBase<?>> implements QueryStep {
protected final String nodeName;
protected final Collection<String> fields;
protected final List<DSLNodeKey> nodeKeys;
protected final StringBuilder query;
protected boolean output = false;
public DSLNodeBase() {
this.nodeName = "";
this.nodeKeys = new ArrayList<>();
this.query = new StringBuilder();
this.fields = new LinkedHashSet<>();
}
public DSLNodeBase(GraphInventoryObjectName name) {
this.nodeName = name.typeName();
this.nodeKeys = new ArrayList<>();
this.query = new StringBuilder();
this.fields = new LinkedHashSet<>();
query.append(nodeName);
}
public DSLNodeBase(GraphInventoryObjectName name, DSLNodeKey... key) {
this.nodeName = name.typeName();
this.nodeKeys = Arrays.asList(key);
this.query = new StringBuilder();
this.fields = new LinkedHashSet<>();
query.append(nodeName);
}
public DSLNodeBase(DSLNodeBase<?> copy) {
this.nodeName = copy.nodeName;
this.nodeKeys = copy.nodeKeys;
this.query = new StringBuilder(copy.query);
this.fields = copy.fields;
this.output = copy.output;
}
public DSLOutputNode output() {
this.output = true;
return new DSLOutputNode(this);
}
public DSLOutputNode output(String... fields) {
this.output = true;
this.fields.addAll(Arrays.asList(fields));
return new DSLOutputNode(this);
}
public T and(DSLNodeKey... key) {
this.nodeKeys.addAll(Arrays.asList(key));
return (T) this;
}
@Override
public String build() {
StringBuilder result = new StringBuilder(query);
if (output) {
if (fields.isEmpty()) {
result.append("*");
} else {
String items =
fields.stream().map(item -> String.format("'%s'", item)).collect(Collectors.joining(", "));
result.append("{").append(items).append("}");
}
}
for (DSLNodeKey key : nodeKeys) {
result.append(key.build());
}
return result.toString();
}
}
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