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Oracle® Coherence Java API Reference
Release 3.7.0.0

E18683-01


com.tangosol.util
Class WrapperCollections.AbstractWrapperEntry

java.lang.Object
  extended by com.tangosol.util.WrapperCollections.AbstractWrapperEntry

All Implemented Interfaces:
java.util.Map.Entry
Enclosing class:
WrapperCollections

public abstract static class WrapperCollections.AbstractWrapperEntry
extends java.lang.Object
implements java.util.Map.Entry

Map.Entry implementation which delegates all calls to another Map.Entry.


Field Summary
protected  java.util.Map.Entry m_entryDelegate
          The Entry to which this wrapper delegates.

 

Constructor Summary
protected WrapperCollections.AbstractWrapperEntry(java.util.Map.Entry entry)
          Create an AbstractWrapperEntry which delegates to the specified Entry.

 

Method Summary
 boolean equals(java.lang.Object o)
          Compares the specified object with this entry for equality.
protected  java.util.Map.Entry getDelegate()
          Return the Map to which all operations should be delegated to.
 java.lang.Object getKey()
          Returns the key corresponding to this entry.
 java.lang.Object getValue()
          Returns the value corresponding to this entry.
 int hashCode()
          Returns the hash code value for this map entry.
 java.lang.Object setValue(java.lang.Object oValue)
          Replaces the value corresponding to this entry with the specified value (optional operation).
 java.lang.String toString()
          

 

Field Detail

m_entryDelegate

protected final java.util.Map.Entry m_entryDelegate
The Entry to which this wrapper delegates.

Constructor Detail

WrapperCollections.AbstractWrapperEntry

protected WrapperCollections.AbstractWrapperEntry(java.util.Map.Entry entry)
Create an AbstractWrapperEntry which delegates to the specified Entry.
Parameters:
entry - the Entry to delegate all calls to

Method Detail

getDelegate

protected java.util.Map.Entry getDelegate()
Return the Map to which all operations should be delegated to.
Returns:
the wrapped Map

getKey

public java.lang.Object getKey()
Returns the key corresponding to this entry.
Specified by:
getKey in interface java.util.Map.Entry
Returns:
the key corresponding to this entry.

getValue

public java.lang.Object getValue()
Returns the value corresponding to this entry. If the mapping has been removed from the backing map (by the iterator's remove operation), the results of this call are undefined.
Specified by:
getValue in interface java.util.Map.Entry
Returns:
the value corresponding to this entry.

setValue

public java.lang.Object setValue(java.lang.Object oValue)
Replaces the value corresponding to this entry with the specified value (optional operation). (Writes through to the map.) The behavior of this call is undefined if the mapping has already been removed from the map (by the iterator's remove operation).
Specified by:
setValue in interface java.util.Map.Entry
Parameters:
oValue - new value to be stored in this entry.
Returns:
old value corresponding to the entry.

equals

public boolean equals(java.lang.Object o)
Compares the specified object with this entry for equality. Returns true if the given object is also a map entry and the two entries represent the same mapping. More formally, two entries e1 and e2 represent the same mapping if
     (e1.getKey()==null ?
      e2.getKey()==null : e1.getKey().equals(e2.getKey()))  &&
     (e1.getValue()==null ?
      e2.getValue()==null : e1.getValue().equals(e2.getValue()))
 
This ensures that the equals method works properly across different implementations of the Map.Entry interface.
Specified by:
equals in interface java.util.Map.Entry
Parameters:
o - object to be compared for equality with this map entry.
Returns:
true if the specified object is equal to this map entry.

hashCode

public int hashCode()
Returns the hash code value for this map entry. The hash code of a map entry e is defined to be:
     (e.getKey()==null   ? 0 : e.getKey().hashCode()) ^
     (e.getValue()==null ? 0 : e.getValue().hashCode())
 
This ensures that e1.equals(e2) implies that e1.hashCode()==e2.hashCode() for any two Entries e1 and e2, as required by the general contract of Object.hashCode.
Specified by:
hashCode in interface java.util.Map.Entry
Returns:
the hash code value for this map entry.
See Also:
Object.hashCode(), Object.equals(Object), Map.Entry.equals(Object)

toString

public java.lang.String toString()

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Oracle® Coherence Java API Reference
Release 3.7.0.0

E18683-01


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