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Shaded version of DataStax Java Driver for Apache Cassandra
/*
* Copyright (C) 2012 Wayne Meissner
*
* This file is part of the JNR project.
*
* 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 jnr.ffi.provider.converters;
import jnr.ffi.mapper.ToNativeContext;
import jnr.ffi.mapper.ToNativeConverter;
import jnr.ffi.provider.ParameterFlags;
/**
* Converts a Byte[] array to a byte[] array parameter
*/
@ToNativeConverter.NoContext
@ToNativeConverter.Cacheable
public class BoxedByteArrayParameterConverter implements ToNativeConverter {
private static final ToNativeConverter IN = new BoxedByteArrayParameterConverter(ParameterFlags.IN);
private static final ToNativeConverter OUT = new BoxedByteArrayParameterConverter.Out(ParameterFlags.OUT);
private static final ToNativeConverter INOUT = new BoxedByteArrayParameterConverter.Out(ParameterFlags.IN | ParameterFlags.OUT);
private final int parameterFlags;
public static ToNativeConverter getInstance(ToNativeContext toNativeContext) {
int parameterFlags = ParameterFlags.parse(toNativeContext.getAnnotations());
return ParameterFlags.isOut(parameterFlags) ? ParameterFlags.isIn(parameterFlags) ? INOUT : OUT : IN;
}
BoxedByteArrayParameterConverter(int parameterFlags) {
this.parameterFlags = parameterFlags;
}
@Override
public byte[] toNative(Byte[] array, ToNativeContext context) {
if (array == null) {
return null;
}
byte[] primitive = new byte[array.length];
if (ParameterFlags.isIn(parameterFlags)) {
for (int i = 0; i < array.length; i++) {
primitive[i] = array[i] != null ? array[i] : 0;
}
}
return primitive;
}
public static final class Out extends BoxedByteArrayParameterConverter implements PostInvocation {
Out(int parameterFlags) {
super(parameterFlags);
}
@Override
public void postInvoke(Byte[] array, byte[] primitive, ToNativeContext context) {
if (array != null && primitive != null) {
for (int i = 0; i < array.length; i++) {
array[i] = primitive[i];
}
}
}
}
@Override
public Class nativeType() {
return byte[].class;
}
}
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