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Java Source Code / Java Documentation » JMX » je » com.sleepycat.collections

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

com.sleepycat.collections .MapEntryParameter

All known Subclasses:   com.sleepycat.collections .StoredMapEntry,
MapEntryParameter
public class MapEntryParameter implements Map.Entry(Code)
A simple Map.Entry implementation that can be used as in input parameter. Since a MapEntryParameter is not obtained from a map, it is not attached to any map in particular. To emphasize that changing this object does not change the map, the MapEntryParameter.setValue method always throws UnsupportedOperationException.
Warning: Use of this interface violates the Java Collections interface contract since these state that Map.Entry objects should only be obtained from Map.entrySet() sets, while this class allows constructing them directly. However, it is useful for performing operations on an entry set such as add(), contains(), etc. For restrictions see MapEntryParameter.getValue and MapEntryParameter.setValue .

author:
   Mark Hayes

Constructor Summary
public MapEntryParameter(Object key, Object value)
     Creates a map entry with a given key and value.

Method Summary
public boolean equals(Object other)
     Compares this entry to a given entry as specified by java.util.Map.Entry.equals .
final public Object getKey()
     Returns the key of this entry.
final public Object getValue()
     Returns the value of this entry.
public int hashCode()
     Computes a hash code as specified by java.util.Map.Entry.hashCode .
public Object setValue(Object newValue)
     Always throws UnsupportedOperationException since this object is not attached to a map.
final void setValueInternal(Object newValue)

public String toString()
     Converts the entry to a string representation for debugging.

Constructor Detail
MapEntryParameter
public MapEntryParameter(Object key, Object value)(Code)
Creates a map entry with a given key and value.
Parameters:
  key - is the key to use.
Parameters:
  value - is the value to use.

Method Detail
equals
public boolean equals(Object other)(Code)
Compares this entry to a given entry as specified by java.util.Map.Entry.equals . the computed hash code.

getKey
final public Object getKey()(Code)
Returns the key of this entry. the key of this entry.

getValue
final public Object getValue()(Code)
Returns the value of this entry. Note that this will be the value passed to the constructor or the last value passed to MapEntryParameter.setValue . It will not reflect changes made to a Map. the value of this entry.

hashCode
public int hashCode()(Code)
Computes a hash code as specified by java.util.Map.Entry.hashCode . the computed hash code.

setValue
public Object setValue(Object newValue)(Code)
Always throws UnsupportedOperationException since this object is not attached to a map.

setValueInternal
final void setValueInternal(Object newValue)(Code)

toString
public String toString()(Code)
Converts the entry to a string representation for debugging. the string representation.

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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