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A driver for Apache Cassandra 1.2+ that works exclusively with the Cassandra Query Language version 3
(CQL3) and Cassandra's binary protocol.
/*
* 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.driver.core;
import com.datastax.driver.core.utils.MoreObjects;
import com.google.common.reflect.TypeToken;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.net.InetAddress;
import java.nio.ByteBuffer;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
// We don't want to expose this one: it's less useful externally and it's a bit ugly to expose
// anyway (but it's convenient).
abstract class AbstractData> extends AbstractGettableData
implements SettableData {
final T wrapped;
final ByteBuffer[] values;
// Ugly, we could probably clean that: it is currently needed however because we sometimes
// want wrapped to be 'this' (UDTValue), and sometimes some other object (in BoundStatement).
@SuppressWarnings("unchecked")
protected AbstractData(ProtocolVersion protocolVersion, int size) {
super(protocolVersion);
this.wrapped = (T) this;
this.values = new ByteBuffer[size];
}
protected AbstractData(ProtocolVersion protocolVersion, T wrapped, int size) {
this(protocolVersion, wrapped, new ByteBuffer[size]);
}
protected AbstractData(ProtocolVersion protocolVersion, T wrapped, ByteBuffer[] values) {
super(protocolVersion);
this.wrapped = wrapped;
this.values = values;
}
protected abstract int[] getAllIndexesOf(String name);
protected T setValue(int i, ByteBuffer value) {
values[i] = value;
return wrapped;
}
@Override
protected ByteBuffer getValue(int i) {
return values[i];
}
@Override
protected int getIndexOf(String name) {
return getAllIndexesOf(name)[0];
}
@Override
public T setBool(int i, boolean v) {
TypeCodec codec = codecFor(i, Boolean.class);
ByteBuffer bb;
if (codec instanceof TypeCodec.PrimitiveBooleanCodec)
bb = ((TypeCodec.PrimitiveBooleanCodec) codec).serializeNoBoxing(v, protocolVersion);
else bb = codec.serialize(v, protocolVersion);
return setValue(i, bb);
}
@Override
public T setBool(String name, boolean v) {
for (int i : getAllIndexesOf(name)) {
setBool(i, v);
}
return wrapped;
}
@Override
public T setByte(int i, byte v) {
TypeCodec codec = codecFor(i, Byte.class);
ByteBuffer bb;
if (codec instanceof TypeCodec.PrimitiveByteCodec)
bb = ((TypeCodec.PrimitiveByteCodec) codec).serializeNoBoxing(v, protocolVersion);
else bb = codec.serialize(v, protocolVersion);
return setValue(i, bb);
}
@Override
public T setByte(String name, byte v) {
for (int i : getAllIndexesOf(name)) {
setByte(i, v);
}
return wrapped;
}
@Override
public T setShort(int i, short v) {
TypeCodec codec = codecFor(i, Short.class);
ByteBuffer bb;
if (codec instanceof TypeCodec.PrimitiveShortCodec)
bb = ((TypeCodec.PrimitiveShortCodec) codec).serializeNoBoxing(v, protocolVersion);
else bb = codec.serialize(v, protocolVersion);
return setValue(i, bb);
}
@Override
public T setShort(String name, short v) {
for (int i : getAllIndexesOf(name)) {
setShort(i, v);
}
return wrapped;
}
@Override
public T setInt(int i, int v) {
TypeCodec codec = codecFor(i, Integer.class);
ByteBuffer bb;
if (codec instanceof TypeCodec.PrimitiveIntCodec)
bb = ((TypeCodec.PrimitiveIntCodec) codec).serializeNoBoxing(v, protocolVersion);
else bb = codec.serialize(v, protocolVersion);
return setValue(i, bb);
}
@Override
public T setInt(String name, int v) {
for (int i : getAllIndexesOf(name)) {
setInt(i, v);
}
return wrapped;
}
@Override
public T setLong(int i, long v) {
TypeCodec codec = codecFor(i, Long.class);
ByteBuffer bb;
if (codec instanceof TypeCodec.PrimitiveLongCodec)
bb = ((TypeCodec.PrimitiveLongCodec) codec).serializeNoBoxing(v, protocolVersion);
else bb = codec.serialize(v, protocolVersion);
return setValue(i, bb);
}
@Override
public T setLong(String name, long v) {
for (int i : getAllIndexesOf(name)) {
setLong(i, v);
}
return wrapped;
}
@Override
public T setTimestamp(int i, Date v) {
return setValue(i, codecFor(i, Date.class).serialize(v, protocolVersion));
}
@Override
public T setTimestamp(String name, Date v) {
for (int i : getAllIndexesOf(name)) {
setTimestamp(i, v);
}
return wrapped;
}
@Override
public T setDate(int i, LocalDate v) {
return setValue(i, codecFor(i, LocalDate.class).serialize(v, protocolVersion));
}
@Override
public T setDate(String name, LocalDate v) {
for (int i : getAllIndexesOf(name)) {
setDate(i, v);
}
return wrapped;
}
@Override
public T setTime(int i, long v) {
TypeCodec codec = codecFor(i, Long.class);
ByteBuffer bb;
if (codec instanceof TypeCodec.PrimitiveLongCodec)
bb = ((TypeCodec.PrimitiveLongCodec) codec).serializeNoBoxing(v, protocolVersion);
else bb = codec.serialize(v, protocolVersion);
return setValue(i, bb);
}
@Override
public T setTime(String name, long v) {
for (int i : getAllIndexesOf(name)) {
setTime(i, v);
}
return wrapped;
}
@Override
public T setFloat(int i, float v) {
TypeCodec codec = codecFor(i, Float.class);
ByteBuffer bb;
if (codec instanceof TypeCodec.PrimitiveFloatCodec)
bb = ((TypeCodec.PrimitiveFloatCodec) codec).serializeNoBoxing(v, protocolVersion);
else bb = codec.serialize(v, protocolVersion);
return setValue(i, bb);
}
@Override
public T setFloat(String name, float v) {
for (int i : getAllIndexesOf(name)) {
setFloat(i, v);
}
return wrapped;
}
@Override
public T setDouble(int i, double v) {
TypeCodec codec = codecFor(i, Double.class);
ByteBuffer bb;
if (codec instanceof TypeCodec.PrimitiveDoubleCodec)
bb = ((TypeCodec.PrimitiveDoubleCodec) codec).serializeNoBoxing(v, protocolVersion);
else bb = codec.serialize(v, protocolVersion);
return setValue(i, bb);
}
@Override
public T setDouble(String name, double v) {
for (int i : getAllIndexesOf(name)) {
setDouble(i, v);
}
return wrapped;
}
@Override
public T setString(int i, String v) {
return setValue(i, codecFor(i, String.class).serialize(v, protocolVersion));
}
@Override
public T setString(String name, String v) {
for (int i : getAllIndexesOf(name)) {
setString(i, v);
}
return wrapped;
}
@Override
public T setBytes(int i, ByteBuffer v) {
return setValue(i, codecFor(i, ByteBuffer.class).serialize(v, protocolVersion));
}
@Override
public T setBytes(String name, ByteBuffer v) {
for (int i : getAllIndexesOf(name)) {
setBytes(i, v);
}
return wrapped;
}
@Override
public T setBytesUnsafe(int i, ByteBuffer v) {
return setValue(i, v == null ? null : v.duplicate());
}
@Override
public T setBytesUnsafe(String name, ByteBuffer v) {
ByteBuffer value = v == null ? null : v.duplicate();
for (int i : getAllIndexesOf(name)) {
setValue(i, value);
}
return wrapped;
}
@Override
public T setVarint(int i, BigInteger v) {
return setValue(i, codecFor(i, BigInteger.class).serialize(v, protocolVersion));
}
@Override
public T setVarint(String name, BigInteger v) {
for (int i : getAllIndexesOf(name)) {
setVarint(i, v);
}
return wrapped;
}
@Override
public T setDecimal(int i, BigDecimal v) {
return setValue(i, codecFor(i, BigDecimal.class).serialize(v, protocolVersion));
}
@Override
public T setDecimal(String name, BigDecimal v) {
for (int i : getAllIndexesOf(name)) {
setDecimal(i, v);
}
return wrapped;
}
@Override
public T setUUID(int i, UUID v) {
return setValue(i, codecFor(i, UUID.class).serialize(v, protocolVersion));
}
@Override
public T setUUID(String name, UUID v) {
for (int i : getAllIndexesOf(name)) {
setUUID(i, v);
}
return wrapped;
}
@Override
public T setInet(int i, InetAddress v) {
return setValue(i, codecFor(i, InetAddress.class).serialize(v, protocolVersion));
}
@Override
public T setInet(String name, InetAddress v) {
for (int i : getAllIndexesOf(name)) {
setInet(i, v);
}
return wrapped;
}
// setToken is package-private because we only want to expose it in BoundStatement
T setToken(int i, Token v) {
if (v == null)
throw new NullPointerException(
String.format("Cannot set a null token for column %s", getName(i)));
checkType(i, v.getType().getName());
// Bypass CodecRegistry when serializing tokens
return setValue(i, v.serialize(protocolVersion));
}
T setToken(String name, Token v) {
for (int i : getAllIndexesOf(name)) {
setToken(i, v);
}
return wrapped;
}
@Override
@SuppressWarnings("unchecked")
public T setList(int i, List v) {
return setValue(i, codecFor(i).serialize(v, protocolVersion));
}
@Override
public T setList(int i, List v, Class elementsClass) {
return setValue(i, codecFor(i, TypeTokens.listOf(elementsClass)).serialize(v, protocolVersion));
}
@Override
public T setList(int i, List v, TypeToken elementsType) {
return setValue(i, codecFor(i, TypeTokens.listOf(elementsType)).serialize(v, protocolVersion));
}
@Override
public T setList(String name, List v) {
for (int i : getAllIndexesOf(name)) {
setList(i, v);
}
return wrapped;
}
@Override
public T setList(String name, List v, Class elementsClass) {
for (int i : getAllIndexesOf(name)) {
setList(i, v, elementsClass);
}
return wrapped;
}
@Override
public T setList(String name, List v, TypeToken elementsType) {
for (int i : getAllIndexesOf(name)) {
setList(i, v, elementsType);
}
return wrapped;
}
@SuppressWarnings("unchecked")
@Override
public T setMap(int i, Map v) {
return setValue(i, codecFor(i).serialize(v, protocolVersion));
}
@Override
public T setMap(int i, Map v, Class keysClass, Class valuesClass) {
return setValue(
i, codecFor(i, TypeTokens.mapOf(keysClass, valuesClass)).serialize(v, protocolVersion));
}
@Override
public T setMap(int i, Map v, TypeToken keysType, TypeToken valuesType) {
return setValue(
i, codecFor(i, TypeTokens.mapOf(keysType, valuesType)).serialize(v, protocolVersion));
}
@Override
public T setMap(String name, Map v) {
for (int i : getAllIndexesOf(name)) {
setMap(i, v);
}
return wrapped;
}
@Override
public T setMap(String name, Map v, Class keysClass, Class valuesClass) {
for (int i : getAllIndexesOf(name)) {
setMap(i, v, keysClass, valuesClass);
}
return wrapped;
}
@Override
public T setMap(String name, Map v, TypeToken keysType, TypeToken valuesType) {
for (int i : getAllIndexesOf(name)) {
setMap(i, v, keysType, valuesType);
}
return wrapped;
}
@Override
@SuppressWarnings("unchecked")
public T setSet(int i, Set v) {
return setValue(i, codecFor(i).serialize(v, protocolVersion));
}
@Override
public T setSet(int i, Set v, Class elementsClass) {
return setValue(i, codecFor(i, TypeTokens.setOf(elementsClass)).serialize(v, protocolVersion));
}
@Override
public T setSet(int i, Set v, TypeToken elementsType) {
return setValue(i, codecFor(i, TypeTokens.setOf(elementsType)).serialize(v, protocolVersion));
}
@Override
public T setSet(String name, Set v) {
for (int i : getAllIndexesOf(name)) {
setSet(i, v);
}
return wrapped;
}
@Override
public T setSet(String name, Set v, Class elementsClass) {
for (int i : getAllIndexesOf(name)) {
setSet(i, v, elementsClass);
}
return wrapped;
}
@Override
public T setSet(String name, Set v, TypeToken elementsType) {
for (int i : getAllIndexesOf(name)) {
setSet(i, v, elementsType);
}
return wrapped;
}
@Override
public T setUDTValue(int i, UDTValue v) {
return setValue(i, codecFor(i, UDTValue.class).serialize(v, protocolVersion));
}
@Override
public T setUDTValue(String name, UDTValue v) {
for (int i : getAllIndexesOf(name)) {
setUDTValue(i, v);
}
return wrapped;
}
@Override
public T setTupleValue(int i, TupleValue v) {
return setValue(i, codecFor(i, TupleValue.class).serialize(v, protocolVersion));
}
@Override
public T setTupleValue(String name, TupleValue v) {
for (int i : getAllIndexesOf(name)) {
setTupleValue(i, v);
}
return wrapped;
}
@Override
public T set(int i, V v, Class targetClass) {
return set(i, v, codecFor(i, targetClass));
}
@Override
public T set(String name, V v, Class targetClass) {
for (int i : getAllIndexesOf(name)) {
set(i, v, targetClass);
}
return wrapped;
}
@Override
public T set(int i, V v, TypeToken targetType) {
return set(i, v, codecFor(i, targetType));
}
@Override
public T set(String name, V v, TypeToken targetType) {
for (int i : getAllIndexesOf(name)) {
set(i, v, targetType);
}
return wrapped;
}
@Override
public T set(int i, V v, TypeCodec codec) {
checkType(i, codec.getCqlType().getName());
return setValue(i, codec.serialize(v, protocolVersion));
}
@Override
public T set(String name, V v, TypeCodec codec) {
for (int i : getAllIndexesOf(name)) {
set(i, v, codec);
}
return wrapped;
}
@Override
public T setToNull(int i) {
return setValue(i, null);
}
@Override
public T setToNull(String name) {
for (int i : getAllIndexesOf(name)) {
setToNull(i);
}
return wrapped;
}
@Override
public boolean equals(Object o) {
if (!(o instanceof AbstractData)) return false;
AbstractData that = (AbstractData) o;
if (values.length != that.values.length) return false;
if (this.protocolVersion != that.protocolVersion) return false;
// Deserializing each value is slightly inefficient, but comparing
// the bytes could in theory be wrong (for varint for instance, 2 values
// can have different binary representation but be the same value due to
// leading zeros). So we don't take any risk.
for (int i = 0; i < values.length; i++) {
DataType thisType = getType(i);
DataType thatType = that.getType(i);
if (!thisType.equals(thatType)) return false;
Object thisValue = this.codecFor(i).deserialize(this.values[i], this.protocolVersion);
Object thatValue = that.codecFor(i).deserialize(that.values[i], that.protocolVersion);
if (!MoreObjects.equal(thisValue, thatValue)) return false;
}
return true;
}
@Override
public int hashCode() {
// Same as equals
int hash = 31;
for (int i = 0; i < values.length; i++)
hash +=
values[i] == null ? 1 : codecFor(i).deserialize(values[i], protocolVersion).hashCode();
return hash;
}
}