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Oracle® Coherence Java API Reference
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## com.tangosol.io.bdb
Class BerkeleyDBBinaryStore.DatabaseHolder

    java.lang.Object
      com.tangosol.io.bdb.BerkeleyDBBinaryStore.DatabaseHolder

Enclosing class:
  BerkeleyDBBinaryStore

    protected class BerkeleyDBBinaryStore.DatabaseHolder

extends java.lang.Object

The DatabaseHolder class is used as a wrapper around a Berkeley DB Database object.

Database objects cannot be closed if they are in use by other threads. The Java garbage collector and this holder are utilized to delay closing the Database until it is guaranteed to not be in use.

Field Summary
`protected com.sleepycat.je.Database` | `m_db` The underlying Database Handle.
`protected boolean` | `m_fTemporary` Flag indicating if the database is temporary.
`protected java.lang.String` | `m_sDbName` The name of the underlying Database.

Constructor Summary
`BerkeleyDBBinaryStore.DatabaseHolder(java.lang.String sDbName)` Construct a DatabaseHolder, including a Database.

Method Summary
`protected void` | `closeDb()` Close the Database.
`protected void` | `finalize()` Finalize the holder, deleting the datbase if it is temporary.
`com.sleepycat.je.Database` | `getDb()` Get the underlying Database handle.
`java.lang.String` | `getName()` Get the name of the underlying Database.
`boolean` | `isTemporary()` Return if the database is temporary.
`java.lang.String` | `toString()` Return the Holder's human readable description.

Field Detail

### m_db

    protected com.sleepycat.je.Database m_db

  The underlying Database Handle.

### m_sDbName

    protected java.lang.String m_sDbName

  The name of the underlying Database.

  The name is maintained exteranlly from the Database as calls to Database.getDatabaseName() are costly.

### m_fTemporary

    protected boolean m_fTemporary

  Flag indicating if the database is temporary.

  Temporary databases are automatically deleted on shutdown or GC.

Constructor Detail

### BerkeleyDBBinaryStore.DatabaseHolder

    public BerkeleyDBBinaryStore.DatabaseHolder(java.lang.String sDbName)
                                         throws com.sleepycat.je.DatabaseException

  Construct a DatabaseHolder, including a Database.

  Parameters:
    `sDbName` - if non `null` specifies the name of a persistent database.
  Throws:
    `com.sleepycat.je.DatabaseException`

Method Detail

### toString

    public java.lang.String toString()

  Return the Holder's human readable description.

  Returns:
    the Holder's human readable description

### finalize

    protected void finalize()
                     throws java.lang.Throwable

  Finalize the holder, deleting the datbase if it is temporary.

  Throws:
    `java.lang.Throwable` - if the removal fails

### getDb

    public com.sleepycat.je.Database getDb()

  Get the underlying Database handle.

  Returns:
    the Database handle

### getName

    public java.lang.String getName()

  Get the name of the underlying Database.

  Returns:
    the Database name

### isTemporary

    public boolean isTemporary()

  Return if the database is temporary.

  Returns:
    true if the database is temporary

### closeDb

    protected void closeDb()
                    throws com.sleepycat.je.DatabaseException

  Close the Database.

  If this is a temporary, or empty persistent DB, then it will be deleted.

  Throws:
    `com.sleepycat.je.DatabaseException`

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Oracle® Coherence Java API Reference
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