com.datastax.dse.driver.internal.querybuilder.schema.DseTableEdgeOperation Maven / Gradle / Ivy
/*
* Copyright DataStax, Inc.
*
* 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.
*/
package com.datastax.dse.driver.internal.querybuilder.schema;
import com.datastax.dse.driver.api.querybuilder.schema.DseGraphEdgeSide;
import com.datastax.oss.driver.api.core.CqlIdentifier;
import com.datastax.oss.driver.internal.querybuilder.CqlHelper;
import java.util.List;
public class DseTableEdgeOperation {
private final DseTableGraphOperationType type;
private final CqlIdentifier label;
private final DseGraphEdgeSide from;
private final DseGraphEdgeSide to;
public DseTableEdgeOperation(
DseTableGraphOperationType type,
CqlIdentifier label,
DseGraphEdgeSide from,
DseGraphEdgeSide to) {
this.type = type;
this.label = label;
this.from = from;
this.to = to;
}
public DseTableGraphOperationType getType() {
return type;
}
public CqlIdentifier getLabel() {
return label;
}
public DseGraphEdgeSide getFrom() {
return from;
}
public DseGraphEdgeSide getTo() {
return to;
}
public void append(StringBuilder builder) {
builder.append("EDGE LABEL");
if (label != null) {
builder.append(' ').append(label.asCql(true));
}
if (type == DseTableGraphOperationType.WITH) {
builder.append(" FROM ");
append(from, builder);
builder.append(" TO ");
append(to, builder);
}
}
private static void append(DseGraphEdgeSide side, StringBuilder builder) {
builder.append(side.getTableId().asCql(true)).append('(');
List pkColumns = side.getPartitionKeyColumns();
if (pkColumns.size() == 1) {
builder.append(pkColumns.get(0).asCql(true));
} else {
CqlHelper.appendIds(pkColumns, builder, "(", ",", ")");
}
CqlHelper.appendIds(side.getClusteringColumns(), builder, ",", ",", null);
builder.append(')');
}
}