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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.vespa;
/**
* @author Simon Thoresen Hult
*/
class OffsetContinuation extends EncodableContinuation {
public static final int FLAG_UNSTABLE = 1;
private final ResultId resultId;
private final int tag;
private final int offset;
private final int flags;
public OffsetContinuation(ResultId resultId, int tag, int offset, int flags) {
resultId.getClass(); // throws NullPointerException
this.resultId = resultId;
this.tag = tag;
this.offset = offset;
this.flags = flags;
}
@Override
public OffsetContinuation copy() {
return this; // immutable
}
public ResultId getResultId() {
return resultId;
}
public int getTag() {
return tag;
}
public int getOffset() {
return offset;
}
public int getMetaEnum() {
return flags;
}
public boolean testFlag(int flag) {
return (flags & flag) != 0;
}
@Override
public int hashCode() {
return resultId.hashCode() + offset + flags;
}
@Override
public boolean equals(Object obj) {
if (!(obj instanceof OffsetContinuation)) {
return false;
}
OffsetContinuation rhs = (OffsetContinuation)obj;
if (!resultId.equals(rhs.resultId)) {
return false;
}
if (tag != rhs.tag) {
return false;
}
if (offset != rhs.offset) {
return false;
}
if (flags != rhs.flags) {
return false;
}
return true;
}
@Override
public void encode(IntegerEncoder out) {
resultId.encode(out);
out.append(tag);
out.append(offset);
out.append(flags);
}
public static OffsetContinuation decode(IntegerDecoder in) {
ResultId resultId = ResultId.decode(in);
int tag = in.next();
int offset = in.next();
int flags = in.next();
return new OffsetContinuation(resultId, tag, offset, flags);
}
}
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