com.datastax.oss.driver.internal.core.type.codec.VarIntCodec Maven / Gradle / Ivy
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* 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.oss.driver.internal.core.type.codec;
import com.datastax.oss.driver.api.core.ProtocolVersion;
import com.datastax.oss.driver.api.core.type.DataType;
import com.datastax.oss.driver.api.core.type.DataTypes;
import com.datastax.oss.driver.api.core.type.codec.TypeCodec;
import com.datastax.oss.driver.api.core.type.reflect.GenericType;
import com.datastax.oss.protocol.internal.util.Bytes;
import edu.umd.cs.findbugs.annotations.NonNull;
import edu.umd.cs.findbugs.annotations.Nullable;
import java.math.BigInteger;
import java.nio.ByteBuffer;
import net.jcip.annotations.ThreadSafe;
@ThreadSafe
public class VarIntCodec implements TypeCodec {
@NonNull
@Override
public GenericType getJavaType() {
return GenericType.BIG_INTEGER;
}
@NonNull
@Override
public DataType getCqlType() {
return DataTypes.VARINT;
}
@Override
public boolean accepts(@NonNull Object value) {
return value instanceof BigInteger;
}
@Override
public boolean accepts(@NonNull Class javaClass) {
return BigInteger.class.isAssignableFrom(javaClass);
}
@Nullable
@Override
public ByteBuffer encode(@Nullable BigInteger value, @NonNull ProtocolVersion protocolVersion) {
return (value == null) ? null : ByteBuffer.wrap(value.toByteArray());
}
@Nullable
@Override
public BigInteger decode(@Nullable ByteBuffer bytes, @NonNull ProtocolVersion protocolVersion) {
return (bytes == null) || bytes.remaining() == 0 ? null : new BigInteger(Bytes.getArray(bytes));
}
@NonNull
@Override
public String format(@Nullable BigInteger value) {
return (value == null) ? "NULL" : value.toString();
}
@Nullable
@Override
public BigInteger parse(@Nullable String value) {
try {
return (value == null || value.isEmpty() || value.equalsIgnoreCase("NULL"))
? null
: new BigInteger(value);
} catch (NumberFormatException e) {
throw new IllegalArgumentException(
String.format("Cannot parse varint value from \"%s\"", value), e);
}
}
}