com.datastax.dse.driver.internal.core.data.geometry.WkbSerializationProxy Maven / Gradle / Ivy
The newest version!
/*
* 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.
*/
package com.datastax.dse.driver.internal.core.data.geometry;
import com.datastax.dse.driver.api.core.data.geometry.LineString;
import com.datastax.dse.driver.api.core.data.geometry.Point;
import com.datastax.dse.driver.api.core.data.geometry.Polygon;
import com.datastax.oss.protocol.internal.util.Bytes;
import java.io.Serializable;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import net.jcip.annotations.Immutable;
/**
* A thin wrapper around a Well-Known Binary byte sequence, that gets substituted for {@link
* DefaultGeometry} instances during the serialization / deserialization process. This allows
* immutable geometry classes.
*/
@Immutable
class WkbSerializationProxy implements Serializable {
private static final long serialVersionUID = 1L;
private final byte[] wkb;
WkbSerializationProxy(ByteBuffer wkb) {
this.wkb = Bytes.getArray(wkb);
}
private Object readResolve() {
ByteBuffer buffer = ByteBuffer.wrap(wkb).order(ByteOrder.nativeOrder());
int type = buffer.getInt(1);
if (type == 1) {
return Point.fromWellKnownBinary(buffer);
} else if (type == 2) {
return LineString.fromWellKnownBinary(buffer);
} else if (type == 3) {
return Polygon.fromWellKnownBinary(buffer);
} else {
throw new IllegalArgumentException(
"Unknown geospatial type code in serialized form: " + type);
}
}
}