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java: NilType::create() returns NilType's one and only instance

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This commit is contained in:
frsyuki 2010-08-19 00:54:23 +09:00
parent 193a739749
commit 1d17836b7d
3 changed files with 8 additions and 6 deletions
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2
java/src/main/java/org/msgpack/MessagePackObject.java
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@ -23,7 +23,7 @@ import java.util.Map;
import java.math.BigInteger;
public abstract class MessagePackObject implements Cloneable, MessagePackable {
public boolean isNull() {
public boolean isNil() {
return false;
}

10
java/src/main/java/org/msgpack/object/NilType.java
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@ -21,14 +21,16 @@ import java.io.IOException;
import org.msgpack.*;
public class NilType extends MessagePackObject {
private static NilType instance = new NilType();
private final static NilType INSTANCE = new NilType();
public static NilType create() {
return instance;
return INSTANCE;
}
private NilType() { }
@Override
public boolean isNull() {
public boolean isNil() {
return true;
}
@ -52,7 +54,7 @@ public class NilType extends MessagePackObject {
@Override
public Object clone() {
return new NilType();
return INSTANCE;
}
}

2
java/src/test/java/org/msgpack/TestPackUnpack.java
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@ -130,7 +130,7 @@ public class TestPackUnpack {
ByteArrayOutputStream out = new ByteArrayOutputStream();
new Packer(out).packNil();
MessagePackObject obj = unpackOne(out);
assertTrue(obj.isNull());
assertTrue(obj.isNil());
}
@Test