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com.tangosol.util
Class WrapperCollections.ConcurrentWrapperEntry

java.lang.Object
com.tangosol.util.WrapperCollections.ConcurrentWrapperEntry

All Implemented Interfaces:

java.util.Map.Entry

Enclosing class:

WrapperCollections

public static class WrapperCollections.ConcurrentWrapperEntry

extends java.lang.Object

implements java.util.Map.Entry

Map Entry implementation which uses a ReadWriteLock to manage concurrent access to an underlying Map Entry.

Since:

Coherence 3.7

Field Summary

protected java.util.concurrent.locks.ReadWriteLock	m_lock The read/write lock for concurrency control.
protected java.util.concurrent.locks.Lock	m_lockExclusive The exclusive lock for performing read/write operations.
protected java.util.concurrent.locks.Lock	m_lockShared The shared lock for performing read operations.

Constructor Summary

	WrapperCollections.ConcurrentWrapperEntry(java.util.Map.Entry entry) Create an ConcurrentWrapperEntry which delegates to the specified Map Entry.
protected	WrapperCollections.ConcurrentWrapperEntry(java.util.Map.Entry entry, java.util.concurrent.locks.ReadWriteLock lock) Create an ConcurrentWrapperEntry which delegates to the specified Map Entry.
protected	WrapperCollections.ConcurrentWrapperEntry(java.util.Map.Entry entry, java.util.concurrent.locks.ReadWriteLock lock, boolean fStrict) Create an ConcurrentWrapperEntry which delegates to the specified Map Entry.

Method Summary

boolean	equals(java.lang.Object o)
protected java.util.Map.Entry	getDelegate() Return the Collection to which all operations should be delegated to.
java.lang.Object	getKey()
protected java.util.concurrent.locks.ReadWriteLock	getLock() Return the ReadWriteLock that is used to manage concurrent access and modifications to the underlying map.
java.lang.Object	getValue()
int	hashCode()
java.lang.Object	setValue(java.lang.Object value)
java.lang.String	toString()

Field Detail

m_lock

protected final java.util.concurrent.locks.ReadWriteLock m_lock

The read/write lock for concurrency control.

m_lockShared

protected final java.util.concurrent.locks.Lock m_lockShared

The shared lock for performing read operations.

Note: This field is null if read-only operations are not supposed to be protected, i.e. if the "strict" option is not used.

m_lockExclusive

protected final java.util.concurrent.locks.Lock m_lockExclusive

The exclusive lock for performing read/write operations.

Constructor Detail

WrapperCollections.ConcurrentWrapperEntry

public WrapperCollections.ConcurrentWrapperEntry(java.util.Map.Entry entry)

Create an ConcurrentWrapperEntry which delegates to the specified Map Entry.

Parameters:

entry - the Map Entry to delegate all calls to

WrapperCollections.ConcurrentWrapperEntry

protected WrapperCollections.ConcurrentWrapperEntry(java.util.Map.Entry entry,
                                                    java.util.concurrent.locks.ReadWriteLock lock)

Create an ConcurrentWrapperEntry which delegates to the specified Map Entry.

Parameters:

entry - the Map Entry to delegate all calls to

lock - a read/write lock for concurrency management

WrapperCollections.ConcurrentWrapperEntry

protected WrapperCollections.ConcurrentWrapperEntry(java.util.Map.Entry entry,
                                                    java.util.concurrent.locks.ReadWriteLock lock,
                                                    boolean fStrict)

Create an ConcurrentWrapperEntry which delegates to the specified Map Entry.

Parameters:

entry - the Map Entry to delegate all calls to

lock - a read/write lock for concurrency management

fStrict - pass true to protect all Entry methods; false to protect only the setValue() method

Method Detail

getKey

public java.lang.Object getKey()

Specified by:

getKey in interface java.util.Map.Entry

getValue

public java.lang.Object getValue()

Specified by:

getValue in interface java.util.Map.Entry

setValue

public java.lang.Object setValue(java.lang.Object value)

Specified by:

setValue in interface java.util.Map.Entry

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Map.Entry

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Map.Entry

toString

public java.lang.String toString()

getDelegate

protected java.util.Map.Entry getDelegate()

Return the Collection to which all operations should be delegated to.

Returns:

the wrapped Collection

getLock

protected java.util.concurrent.locks.ReadWriteLock getLock()

Return the ReadWriteLock that is used to manage concurrent access and modifications to the underlying map.

Returns:

the ReadWriteLock

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