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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.grouping.request;
import java.util.ArrayList;
/**
* This class represents a buffer of byte values to be used as a backing buffer
* for raw buckets.
*
* @author Ulf Lilleengen
*/
public class RawBuffer implements Comparable<RawBuffer>, Cloneable {
private final ArrayList<Byte> buffer;
/**
* Create an empty buffer.
*/
public RawBuffer() {
this.buffer = new ArrayList<>();
}
/**
* Create a buffer with initial content.
*
* @param buffer A buffer of values to be assigned this buffer.
*/
public RawBuffer(ArrayList<Byte> buffer) {
this.buffer = buffer;
}
/**
* Create a buffer with initial content.
*
* @param bytes A buffer of bytes to be assigned this buffer.
*/
public RawBuffer(byte[] bytes) {
buffer = new ArrayList<>();
put(bytes);
}
/**
* Insert a byte value into this buffer.
*
* @param value The value to add to the buffer.
* @return Reference to this.
*/
public RawBuffer put(byte value) {
buffer.add(value);
return this;
}
/**
* Insert an array of byte values into this buffer.
*
* @param values The array to add to the buffer.
* @return Reference to this.
*/
public RawBuffer put(byte[] values) {
for (int i = 0; i < values.length; i++) {
buffer.add(values[i]);
}
return this;
}
/**
* Create a copy of data in the internal buffer.
*
* @return A copy of the data.
*/
public byte[] getBytes() {
byte[] ret = new byte[buffer.size()];
for (int i = 0; i < ret.length; i++) {
ret[i] = buffer.get(i);
}
return ret;
}
@Override
public String toString() {
StringBuilder s = new StringBuilder();
s.append("{");
for (int i = 0; i < buffer.size(); i++) {
s.append(buffer.get(i));
if (i < buffer.size() - 1) {
s.append(",");
}
}
s.append("}");
return s.toString();
}
@Override
public RawBuffer clone() {
return new RawBuffer(new ArrayList<>(buffer));
}
@Override
public int compareTo(RawBuffer rhs) {
Byte[] my = buffer.toArray(new Byte[0]);
Byte[] their = rhs.buffer.toArray(new Byte[0]);
for (int i = 0; i < my.length && i < their.length; i++) {
if (my[i] < their[i]) {
return -1;
} else if (my[i] > their[i]) {
return 1;
}
}
return Integer.compare(my.length, their.length);
}
@Override
public int hashCode() {
return buffer.hashCode();
}
@Override
public boolean equals(Object other) {
if (other == this) return true;
if ( ! (other instanceof RawBuffer)) return false;
return (compareTo((RawBuffer)other) == 0);
}
}
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