/*
* Licensed to Crate under one or more contributor license agreements.
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial
* agreement.
*/
package io.crate.protocols.postgres.types;
import org.jboss.netty.buffer.ChannelBuffer;
import javax.annotation.Nonnull;
import java.nio.charset.StandardCharsets;
class RealType extends PGType {
public static final RealType INSTANCE = new RealType();
static final int OID = 700;
private static final int TYPE_LEN = 4;
private static final int TYPE_MOD = -1;
private RealType() {
super(OID, TYPE_LEN, TYPE_MOD, "float4");
}
@Override
public int writeAsBinary(ChannelBuffer buffer, @Nonnull Object value) {
buffer.writeInt(TYPE_LEN);
buffer.writeFloat(((float) value));
return INT32_BYTE_SIZE + TYPE_LEN;
}
@Override
protected byte[] encodeAsUTF8Text(@Nonnull Object value) {
return Float.toString(((float) value)).getBytes(StandardCharsets.UTF_8);
}
@Override
public Object readBinaryValue(ChannelBuffer buffer, int valueLength) {
assert valueLength == TYPE_LEN : "length should be " + TYPE_LEN + " because float is int32. Actual length: " +
valueLength;
return buffer.readFloat();
}
@Override
Object decodeUTF8Text(byte[] bytes) {
return Float.parseFloat(new String(bytes, StandardCharsets.UTF_8));
}
}