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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 org.apache.avro.reflect;
import java.io.IOException;
import java.util.Arrays;
import org.apache.avro.io.Encoder;
import org.apache.avro.io.ResolvingDecoder;
/**
* Helper class to provide native array access whenever possible. It is much
* faster than using reflection-based operations on arrays.
*/
class ArrayAccessor {
static void writeArray(boolean[] data, Encoder out) throws IOException {
int size = data.length;
out.setItemCount(size);
for (int i = 0; i < size; i++) {
out.startItem();
out.writeBoolean(data[i]);
}
}
// short, and char arrays are upcast to avro int
static void writeArray(short[] data, Encoder out) throws IOException {
int size = data.length;
out.setItemCount(size);
for (int i = 0; i < size; i++) {
out.startItem();
out.writeInt(data[i]);
}
}
static void writeArray(char[] data, Encoder out) throws IOException {
int size = data.length;
out.setItemCount(size);
for (int i = 0; i < size; i++) {
out.startItem();
out.writeInt(data[i]);
}
}
static void writeArray(int[] data, Encoder out) throws IOException {
int size = data.length;
out.setItemCount(size);
for (int i = 0; i < size; i++) {
out.startItem();
out.writeInt(data[i]);
}
}
static void writeArray(long[] data, Encoder out) throws IOException {
int size = data.length;
out.setItemCount(size);
for (int i = 0; i < size; i++) {
out.startItem();
out.writeLong(data[i]);
}
}
static void writeArray(float[] data, Encoder out) throws IOException {
int size = data.length;
out.setItemCount(size);
for (int i = 0; i < size; i++) {
out.startItem();
out.writeFloat(data[i]);
}
}
static void writeArray(double[] data, Encoder out) throws IOException {
int size = data.length;
out.setItemCount(size);
for (int i = 0; i < size; i++) {
out.startItem();
out.writeDouble(data[i]);
}
}
static Object readArray(Object array, Class elementType, long l,
ResolvingDecoder in) throws IOException {
if (elementType == int.class)
return readArray((int[]) array, l, in);
if (elementType == long.class)
return readArray((long[]) array, l, in);
if (elementType == float.class)
return readArray((float[]) array, l, in);
if (elementType == double.class)
return readArray((double[]) array, l, in);
if (elementType == boolean.class)
return readArray((boolean[]) array, l, in);
if (elementType == char.class)
return readArray((char[]) array, l, in);
if (elementType == short.class)
return readArray((short[]) array, l, in);
return null;
}
static boolean[] readArray(boolean[] array, long l, ResolvingDecoder in)
throws IOException {
int index = 0;
do {
int limit = index + (int) l;
if (array.length < limit) {
array = Arrays.copyOf(array, limit);
}
while (index < limit) {
array[index] = in.readBoolean();
index++;
}
} while ((l = in.arrayNext()) > 0);
return array;
}
static int[] readArray(int[] array, long l, ResolvingDecoder in)
throws IOException {
int index = 0;
do {
int limit = index + (int) l;
if (array.length < limit) {
array = Arrays.copyOf(array, limit);
}
while (index < limit) {
array[index] = in.readInt();
index++;
}
} while ((l = in.arrayNext()) > 0);
return array;
}
static short[] readArray(short[] array, long l, ResolvingDecoder in)
throws IOException {
int index = 0;
do {
int limit = index + (int) l;
if (array.length < limit) {
array = Arrays.copyOf(array, limit);
}
while (index < limit) {
array[index] = (short) in.readInt();
index++;
}
} while ((l = in.arrayNext()) > 0);
return array;
}
static char[] readArray(char[] array, long l, ResolvingDecoder in)
throws IOException {
int index = 0;
do {
int limit = index + (int) l;
if (array.length < limit) {
array = Arrays.copyOf(array, limit);
}
while (index < limit) {
array[index] = (char) in.readInt();
index++;
}
} while ((l = in.arrayNext()) > 0);
return array;
}
static long[] readArray(long[] array, long l, ResolvingDecoder in)
throws IOException {
int index = 0;
do {
int limit = index + (int) l;
if (array.length < limit) {
array = Arrays.copyOf(array, limit);
}
while (index < limit) {
array[index] = in.readLong();
index++;
}
} while ((l = in.arrayNext()) > 0);
return array;
}
static float[] readArray(float[] array, long l, ResolvingDecoder in)
throws IOException {
int index = 0;
do {
int limit = index + (int) l;
if (array.length < limit) {
array = Arrays.copyOf(array, limit);
}
while (index < limit) {
array[index] = in.readFloat();
index++;
}
} while ((l = in.arrayNext()) > 0);
return array;
}
static double[] readArray(double[] array, long l, ResolvingDecoder in)
throws IOException {
int index = 0;
do {
int limit = index + (int) l;
if (array.length < limit) {
array = Arrays.copyOf(array, limit);
}
while (index < limit) {
array[index] = in.readDouble();
index++;
}
} while ((l = in.arrayNext()) > 0);
return array;
}
}
