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Oracle® Coherence Java API Reference Release 3.6.0.0 E15725-01 |
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java.lang.Object
com.tangosol.util.Base
com.tangosol.util.NullFilter
public class NullFilter
Filter which discards null references.
Constructor Summary | |
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NullFilter() Default constructor (for ExternalizableLite and PortableObject). |
Method Summary | |
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boolean |
equals(Object o) Compare the NullFilter with another object to determine equality. |
boolean |
evaluate(Object o) Filter interface: evaluate(). |
static NullFilter |
getInstance() Returns an instance of the null enumerator. |
int |
hashCode() Determine a hash value for the NullFilter object according to the general Object.hashCode() contract. |
void |
readExternal(DataInput in) Restore the contents of this object by loading the object's state from the passed DataInput object. |
void |
readExternal(PofReader in) Restore the contents of a user type instance by reading its state using the specified PofReader object. |
String |
toString() Return a human-readable description for this Filter. |
void |
writeExternal(DataOutput out) Save the contents of this object by storing the object's state into the passed DataOutput object. |
void |
writeExternal(PofWriter out) Save the contents of a POF user type instance by writing its state using the specified PofWriter object. |
Constructor Detail |
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public NullFilter()
Method Detail |
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public boolean evaluate(Object o)
evaluate
in interface Filter
o
- the object to testpublic boolean equals(Object o)
public int hashCode()
Object.hashCode()
contract.public String toString()
public void readExternal(DataInput in) throws IOException
readExternal
in interface ExternalizableLite
in
- the DataInput stream to read data from in order to restore the state of this objectIOException
- if an I/O exception occursNotActiveException
- if the object is not in its initial state, and therefore cannot be deserialized intopublic void writeExternal(DataOutput out) throws IOException
writeExternal
in interface ExternalizableLite
out
- the DataOutput stream to write the state of this object toIOException
- if an I/O exception occurspublic void readExternal(PofReader in) throws IOException
readExternal
in interface PortableObject
in
- the PofReader from which to read the object's stateIOException
- if an I/O error occurspublic void writeExternal(PofWriter out) throws IOException
writeExternal
in interface PortableObject
out
- the PofWriter to which to write the object's stateIOException
- if an I/O error occurspublic static final NullFilter getInstance()
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Oracle® Coherence Java API Reference Release 3.6.0.0 E15725-01 |
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