dorkbox/Utilities
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Changed hashcode to be lazy inited

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nathan 2014-09-30 01:41:12 +02:00
parent 5ae80d45bc
commit 6bc474615f
1 changed files with 9 additions and 5 deletions
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14
Dorkbox-Util/src/dorkbox/util/bytes/ByteArrayWrapper.java
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@ -7,7 +7,7 @@ import java.util.Arrays;
*/ */
public final class ByteArrayWrapper { public final class ByteArrayWrapper {
private final byte[] data; private final byte[] data;
private final int hashCode; private Integer hashCode;
/** /**
* Makes a safe copy of the byte array, so that changes to the original do not affect the wrapper. * Makes a safe copy of the byte array, so that changes to the original do not affect the wrapper.
@ -44,7 +44,6 @@ public final class ByteArrayWrapper {
} else { } else {
this.data = data; this.data = data;
} }
this.hashCode = Arrays.hashCode(this.data);
} }
public byte[] getBytes() { public byte[] getBytes() {
@ -63,12 +62,17 @@ public final class ByteArrayWrapper {
@Override @Override
public int hashCode() { public int hashCode() {
// CANNOT be null, so we don't have to null check! // might be null for a thread because it's stale. who cares, get the value again
return this.hashCode; Integer hashCode = this.hashCode;
if (hashCode == null) {
hashCode = Arrays.hashCode(this.data);
this.hashCode = hashCode;
}
return hashCode;
} }
@Override @Override
public String toString() { public String toString() {
return "ByteArrayWrapper [" + java.util.Arrays.toString(this.data) + "]"; return "ByteArrayWrapper " + java.util.Arrays.toString(this.data);
} }
} }