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SecondaryDatabase (Sleepycat Software, Inc. - Berkeley DB Java API)
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<b>Berkeley DB</b><br><font size="-1"> version 4.3.21</font></EM>
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com.sleepycat.db</FONT>
<BR>
Class SecondaryDatabase</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">com.sleepycat.db.Database</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by"><B>com.sleepycat.db.SecondaryDatabase</B>
</PRE>
<HR>
<DL>
<DT>public class <B>SecondaryDatabase</B><DT>extends <A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">Database</A></DL>
<P>
A secondary database handle.
<p>
Secondary databases are opened with <A HREF="../../../com/sleepycat/db/Environment.html#openSecondaryDatabase(com.sleepycat.db.Transaction, java.lang.String, java.lang.String, com.sleepycat.db.Database, com.sleepycat.db.SecondaryConfig)"><CODE>Environment.openSecondaryDatabase</CODE></A> and are
always associated with a single primary database. The distinguishing
characteristics of a secondary database are:
<ul>
<li>Records are automatically added to a secondary database when records are
added, modified and deleted in the primary database. Direct calls to
<code>put()</code> methods on a secondary database are prohibited.</li>
<li>The <A HREF="../../../com/sleepycat/db/Database.html#delete(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry)"><CODE>delete</CODE></A> method of a secondary database will delete
the primary record and as well as all its associated secondary records.</li>
<li>Calls to all <code>get()</code> methods will return the data from the
associated primary database.</li>
<li>Additional <code>get()</code> method signatures are provided to return
the primary key in an additional <code>pKey</code> parameter.</li>
<li>Calls to <A HREF="../../../com/sleepycat/db/Database.html#openCursor(com.sleepycat.db.Transaction, com.sleepycat.db.CursorConfig)"><CODE>openCursor</CODE></A> will return a <A HREF="../../../com/sleepycat/db/SecondaryCursor.html" title="class in com.sleepycat.db"><CODE>SecondaryCursor</CODE></A>, which itself has <code>get()</code> methods that return
the data of the primary database and additional <code>get()</code> method
signatures for returning the primary key.</li>
<li>The <A HREF="../../../com/sleepycat/db/SecondaryDatabase.html#openSecondaryCursor(com.sleepycat.db.Transaction, com.sleepycat.db.CursorConfig)"><CODE>openSecondaryCursor</CODE></A> method is provided
to return a <A HREF="../../../com/sleepycat/db/SecondaryCursor.html" title="class in com.sleepycat.db"><CODE>SecondaryCursor</CODE></A> that doesn't require casting.</li>
</ul>
<p>
<p>
Before opening or creating a secondary database you must implement the
SecondaryKeyCreator interface. For example:
<pre>
class MyKeyCreator implements SecondaryKeyCreator {
public boolean createSecondaryKey(SecondaryDatabase secondary,
DatabaseEntry key,
DatabaseEntry data,
DatabaseEntry result)
throws DatabaseException {
//
// DO HERE: Extract the secondary key from the primary key and data,
// and set the secondary key into the result parameter.
//
return true;
}
}
</pre>
<p>
<p>
To create a secondary database that supports duplicates:
<pre>
Database primaryDb; // The primary database must already be open.
SecondaryConfig secConfig = new SecondaryConfig();
secConfig.setAllowCreate(true);
secConfig.setSortedDuplicates(true);
secConfig.setKeyCreator(new MyKeyCreator());
SecondaryDatabase newDb = env.openSecondaryDatabase(txn, "foo",
primaryDb, secConfig)
</pre>
<p>
If a primary database is to be associated with one or more secondary
databases, it may not be configured for duplicates.
<P>
<P>
<HR>
<P>
<!-- ======== NESTED CLASS SUMMARY ======== -->
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../com/sleepycat/db/SecondaryDatabase.html#SecondaryDatabase(java.lang.String, java.lang.String, com.sleepycat.db.Database, com.sleepycat.db.SecondaryConfig)">SecondaryDatabase</A></B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> fileName,
<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> databaseName,
<A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">Database</A> primaryDatabase,
<A HREF="../../../com/sleepycat/db/SecondaryConfig.html" title="class in com.sleepycat.db">SecondaryConfig</A> config)</CODE>
<BR>
Open a database.</TD>
</TR>
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<TD COLSPAN=2><FONT SIZE="+2">
<B>Method Summary</B></FONT></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/SecondaryDatabase.html#get(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.LockMode)">get</A></B>(<A HREF="../../../com/sleepycat/db/Transaction.html" title="class in com.sleepycat.db">Transaction</A> txn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> key,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> pKey,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data,
<A HREF="../../../com/sleepycat/db/LockMode.html" title="class in com.sleepycat.db">LockMode</A> lockMode)</CODE>
<BR>
Retrieves the key/data pair with the given key.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">Database</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/SecondaryDatabase.html#getPrimaryDatabase()">getPrimaryDatabase</A></B>()</CODE>
<BR>
Returns the primary database associated with this secondary database.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/SecondaryDatabase.html#getSearchBoth(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.LockMode)">getSearchBoth</A></B>(<A HREF="../../../com/sleepycat/db/Transaction.html" title="class in com.sleepycat.db">Transaction</A> txn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> key,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> pKey,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data,
<A HREF="../../../com/sleepycat/db/LockMode.html" title="class in com.sleepycat.db">LockMode</A> lockMode)</CODE>
<BR>
Retrieves the key/data pair with the specified secondary and primary key, that
is, both the primary and secondary key items must match.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/SecondaryDatabase.html#getSearchRecordNumber(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.LockMode)">getSearchRecordNumber</A></B>(<A HREF="../../../com/sleepycat/db/Transaction.html" title="class in com.sleepycat.db">Transaction</A> txn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> key,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> pKey,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data,
<A HREF="../../../com/sleepycat/db/LockMode.html" title="class in com.sleepycat.db">LockMode</A> lockMode)</CODE>
<BR>
Retrieves the key/data pair associated with the specific numbered record of the database.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/db/SecondaryConfig.html" title="class in com.sleepycat.db">SecondaryConfig</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/SecondaryDatabase.html#getSecondaryConfig()">getSecondaryConfig</A></B>()</CODE>
<BR>
Returns a copy of the secondary configuration of this database.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../com/sleepycat/db/SecondaryCursor.html" title="class in com.sleepycat.db">SecondaryCursor</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/SecondaryDatabase.html#openSecondaryCursor(com.sleepycat.db.Transaction, com.sleepycat.db.CursorConfig)">openSecondaryCursor</A></B>(<A HREF="../../../com/sleepycat/db/Transaction.html" title="class in com.sleepycat.db">Transaction</A> txn,
<A HREF="../../../com/sleepycat/db/CursorConfig.html" title="class in com.sleepycat.db">CursorConfig</A> cursorConfig)</CODE>
<BR>
Obtain a cursor on a database, returning a <code>SecondaryCursor</code>.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_com.sleepycat.db.Database"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class com.sleepycat.db.<A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">Database</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../com/sleepycat/db/Database.html#append(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)">append</A>, <A HREF="../../../com/sleepycat/db/Database.html#close()">close</A>, <A HREF="../../../com/sleepycat/db/Database.html#close(boolean)">close</A>, <A HREF="../../../com/sleepycat/db/Database.html#consume(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, boolean)">consume</A>, <A HREF="../../../com/sleepycat/db/Database.html#delete(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry)">delete</A>, <A HREF="../../../com/sleepycat/db/Database.html#get(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.LockMode)">get</A>, <A HREF="../../../com/sleepycat/db/Database.html#getCacheFile()">getCacheFile</A>, <A HREF="../../../com/sleepycat/db/Database.html#getConfig()">getConfig</A>, <A HREF="../../../com/sleepycat/db/Database.html#getDatabaseFile()">getDatabaseFile</A>, <A HREF="../../../com/sleepycat/db/Database.html#getDatabaseName()">getDatabaseName</A>, <A HREF="../../../com/sleepycat/db/Database.html#getEnvironment()">getEnvironment</A>, <A HREF="../../../com/sleepycat/db/Database.html#getKeyRange(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry)">getKeyRange</A>, <A HREF="../../../com/sleepycat/db/Database.html#getSearchBoth(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.LockMode)">getSearchBoth</A>, <A HREF="../../../com/sleepycat/db/Database.html#getSearchRecordNumber(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.LockMode)">getSearchRecordNumber</A>, <A HREF="../../../com/sleepycat/db/Database.html#getStats(com.sleepycat.db.Transaction, com.sleepycat.db.StatsConfig)">getStats</A>, <A HREF="../../../com/sleepycat/db/Database.html#join(com.sleepycat.db.Cursor[], com.sleepycat.db.JoinConfig)">join</A>, <A HREF="../../../com/sleepycat/db/Database.html#openCursor(com.sleepycat.db.Transaction, com.sleepycat.db.CursorConfig)">openCursor</A>, <A HREF="../../../com/sleepycat/db/Database.html#openSequence(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.SequenceConfig)">openSequence</A>, <A HREF="../../../com/sleepycat/db/Database.html#put(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)">put</A>, <A HREF="../../../com/sleepycat/db/Database.html#putNoDupData(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)">putNoDupData</A>, <A HREF="../../../com/sleepycat/db/Database.html#putNoOverwrite(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)">putNoOverwrite</A>, <A HREF="../../../com/sleepycat/db/Database.html#remove(java.lang.String, java.lang.String, com.sleepycat.db.DatabaseConfig)">remove</A>, <A HREF="../../../com/sleepycat/db/Database.html#removeSequence(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.SequenceConfig)">removeSequence</A>, <A HREF="../../../com/sleepycat/db/Database.html#rename(java.lang.String, java.lang.String, java.lang.String, com.sleepycat.db.DatabaseConfig)">rename</A>, <A HREF="../../../com/sleepycat/db/Database.html#setConfig(com.sleepycat.db.DatabaseConfig)">setConfig</A>, <A HREF="../../../com/sleepycat/db/Database.html#sync()">sync</A>, <A HREF="../../../com/sleepycat/db/Database.html#truncate(com.sleepycat.db.Transaction, boolean)">truncate</A>, <A HREF="../../../com/sleepycat/db/Database.html#upgrade(java.lang.String, com.sleepycat.db.DatabaseConfig)">upgrade</A>, <A HREF="../../../com/sleepycat/db/Database.html#verify(java.lang.String, java.lang.String, java.io.PrintStream, com.sleepycat.db.VerifyConfig)">verify</A></CODE></TD>
</TR>
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<TD><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TD>
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<TD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
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<P>
<!-- ============ FIELD DETAIL =========== -->
<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<B>Constructor Detail</B></FONT></TD>
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<A NAME="SecondaryDatabase(java.lang.String, java.lang.String, com.sleepycat.db.Database, com.sleepycat.db.SecondaryConfig)"><!-- --></A><H3>
SecondaryDatabase</H3>
<PRE>
public <B>SecondaryDatabase</B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> fileName,
<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> databaseName,
<A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">Database</A> primaryDatabase,
<A HREF="../../../com/sleepycat/db/SecondaryConfig.html" title="class in com.sleepycat.db">SecondaryConfig</A> config)
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A>,
<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/io/FileNotFoundException.html" title="class or interface in java.io">FileNotFoundException</A></PRE>
<DL>
<DD>Open a database.
<p>
The database is represented by the file and database parameters.
<p>
The currently supported database file formats (or <em>access
methods</em>) are Btree, Hash, Queue, and Recno. The Btree format is a
representation of a sorted, balanced tree structure. The Hash format
is an extensible, dynamic hashing scheme. The Queue format supports
fast access to fixed-length records accessed sequentially or by logical
record number. The Recno format supports fixed- or variable-length
records, accessed sequentially or by logical record number, and
optionally backed by a flat text file.
<p>
Storage and retrieval are based on key/data pairs; see <A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db"><CODE>DatabaseEntry</CODE></A>
for more information.
<p>
Opening a database is a relatively expensive operation, and maintaining
a set of open databases will normally be preferable to repeatedly
opening and closing the database for each new query.
<p>
In-memory databases never intended to be preserved on disk may be
created by setting both the fileName and databaseName parameters to
null. Note that in-memory databases can only ever be shared by sharing
the single database handle that created them, in circumstances where
doing so is safe. The environment variable <code>TMPDIR</code> may
be used as a directory in which to create temporary backing files.
<p>
<P>
<DT><B>Parameters:</B><DD><CODE>fileName</CODE> - The name of an underlying file that will be used to back the database.
On Windows platforms, this argument will be interpreted as a UTF-8
string, which is equivalent to ASCII for Latin characters.
<p><DD><CODE>databaseName</CODE> - An optional parameter that allows applications to have multiple
databases in a single file. Although no databaseName parameter needs
to be specified, it is an error to attempt to open a second database in
a physical file that was not initially created using a databaseName
parameter. Further, the databaseName parameter is not supported by the
Queue format.
<p><DD><CODE>primaryDatabase</CODE> - a database handle for the primary database that is to be indexed.
<p><DD><CODE>config</CODE> - The secondary database open attributes. If null, default attributes are used.</DL>
<!-- ============ METHOD DETAIL ========== -->
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<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="getSecondaryConfig()"><!-- --></A><H3>
getSecondaryConfig</H3>
<PRE>
public <A HREF="../../../com/sleepycat/db/SecondaryConfig.html" title="class in com.sleepycat.db">SecondaryConfig</A> <B>getSecondaryConfig</B>()
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Returns a copy of the secondary configuration of this database.
<p>
<P>
<DD><DL>
<DT><B>Returns:</B><DD>a copy of the secondary configuration of this database.
<p>
<p>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE> - if a failure occurs.</DL>
</DD>
</DL>
<HR>
<A NAME="get(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.LockMode)"><!-- --></A><H3>
get</H3>
<PRE>
public <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A> <B>get</B>(<A HREF="../../../com/sleepycat/db/Transaction.html" title="class in com.sleepycat.db">Transaction</A> txn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> key,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> pKey,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data,
<A HREF="../../../com/sleepycat/db/LockMode.html" title="class in com.sleepycat.db">LockMode</A> lockMode)
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Retrieves the key/data pair with the given key. If the matching key has
duplicate values, the first data item in the set of duplicates is returned.
Retrieval of duplicates requires the use of <A HREF="../../../com/sleepycat/db/Cursor.html" title="class in com.sleepycat.db"><CODE>Cursor</CODE></A> operations.
<p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>txn</CODE> - For a transactional database, an explicit transaction may be specified to
transaction-protect the operation, or null may be specified to perform the
operation without transaction protection. For a non-transactional database,
null must be specified.
<p><DD><CODE>key</CODE> - the secondary key
used as input. It must be initialized with a non-null byte array by the
caller.
<p><DD><CODE>pKey</CODE> - the primary key
returned as output. Its byte array does not need to be initialized by the
caller.
<p><DD><CODE>data</CODE> - the primary data
returned as output. Its byte array does not need to be initialized by the
caller.
<p><DD><CODE>lockMode</CODE> - the locking attributes; if null, default attributes are used.
<p>
<DT><B>Returns:</B><DD><A HREF="../../../com/sleepycat/db/OperationStatus.html#NOTFOUND"><CODE>OperationStatus.NOTFOUND</CODE></A> if no matching key/data pair is
found; otherwise, <A HREF="../../../com/sleepycat/db/OperationStatus.html#SUCCESS"><CODE>OperationStatus.SUCCESS</CODE></A>.
<p>
<p>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DeadlockException.html" title="class in com.sleepycat.db">DeadlockException</A></CODE> - if the operation was selected to resolve a
deadlock.
<p>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if an invalid parameter was specified.
<p>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE> - if a failure occurs.</DL>
</DD>
</DL>
<HR>
<A NAME="getSearchBoth(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.LockMode)"><!-- --></A><H3>
getSearchBoth</H3>
<PRE>
public <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A> <B>getSearchBoth</B>(<A HREF="../../../com/sleepycat/db/Transaction.html" title="class in com.sleepycat.db">Transaction</A> txn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> key,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> pKey,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data,
<A HREF="../../../com/sleepycat/db/LockMode.html" title="class in com.sleepycat.db">LockMode</A> lockMode)
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Retrieves the key/data pair with the specified secondary and primary key, that
is, both the primary and secondary key items must match.
<p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>txn</CODE> - For a transactional database, an explicit transaction may be specified to
transaction-protect the operation, or null may be specified to perform the
operation without transaction protection. For a non-transactional database,
null must be specified.<DD><CODE>key</CODE> - the secondary key
used as input. It must be initialized with a non-null byte array by the
caller.<DD><CODE>pKey</CODE> - the primary key
used as input. It must be initialized with a non-null byte array by the
caller.<DD><CODE>data</CODE> - the primary data
returned as output. Its byte array does not need to be initialized by the
caller.
<p><DD><CODE>lockMode</CODE> - the locking attributes; if null, default attributes are used.
<p>
<DT><B>Returns:</B><DD><A HREF="../../../com/sleepycat/db/OperationStatus.html#NOTFOUND"><CODE>OperationStatus.NOTFOUND</CODE></A> if no matching key/data pair is
found; otherwise, <A HREF="../../../com/sleepycat/db/OperationStatus.html#SUCCESS"><CODE>OperationStatus.SUCCESS</CODE></A>.
<p>
<p>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DeadlockException.html" title="class in com.sleepycat.db">DeadlockException</A></CODE> - if the operation was selected to resolve a
deadlock.
<p>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if an invalid parameter was specified.
<p>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE> - if a failure occurs.</DL>
</DD>
</DL>
<HR>
<A NAME="getPrimaryDatabase()"><!-- --></A><H3>
getPrimaryDatabase</H3>
<PRE>
public <A HREF="../../../com/sleepycat/db/Database.html" title="class in com.sleepycat.db">Database</A> <B>getPrimaryDatabase</B>()
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Returns the primary database associated with this secondary database.
<p>
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the primary database associated with this secondary database.
<p>
<p>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE> - if a failure occurs.</DL>
</DD>
</DL>
<HR>
<A NAME="openSecondaryCursor(com.sleepycat.db.Transaction, com.sleepycat.db.CursorConfig)"><!-- --></A><H3>
openSecondaryCursor</H3>
<PRE>
public <A HREF="../../../com/sleepycat/db/SecondaryCursor.html" title="class in com.sleepycat.db">SecondaryCursor</A> <B>openSecondaryCursor</B>(<A HREF="../../../com/sleepycat/db/Transaction.html" title="class in com.sleepycat.db">Transaction</A> txn,
<A HREF="../../../com/sleepycat/db/CursorConfig.html" title="class in com.sleepycat.db">CursorConfig</A> cursorConfig)
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Obtain a cursor on a database, returning a <code>SecondaryCursor</code>.
Calling this method is the equivalent of calling <A HREF="../../../com/sleepycat/db/Database.html#openCursor(com.sleepycat.db.Transaction, com.sleepycat.db.CursorConfig)"><CODE>Database.openCursor(com.sleepycat.db.Transaction, com.sleepycat.db.CursorConfig)</CODE></A> and
casting the result to <A HREF="../../../com/sleepycat/db/SecondaryCursor.html" title="class in com.sleepycat.db"><CODE>SecondaryCursor</CODE></A>.
<p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>txn</CODE> - To use a cursor for writing to a transactional database, an explicit
transaction must be specified. For read-only access to a transactional
database, the transaction may be null. For a non-transactional database, the
transaction must be null.
<p>
To transaction-protect cursor operations, cursors must be opened and
closed within the context of a transaction, and the txn parameter
specifies the transaction context in which the cursor will be used.
<p><DD><CODE>cursorConfig</CODE> - The cursor attributes. If null, default attributes are used.
<p>
<DT><B>Returns:</B><DD>A secondary database cursor.
<p>
<p>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE> - if a failure occurs.</DL>
</DD>
</DL>
<HR>
<A NAME="getSearchRecordNumber(com.sleepycat.db.Transaction, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.LockMode)"><!-- --></A><H3>
getSearchRecordNumber</H3>
<PRE>
public <A HREF="../../../com/sleepycat/db/OperationStatus.html" title="class in com.sleepycat.db">OperationStatus</A> <B>getSearchRecordNumber</B>(<A HREF="../../../com/sleepycat/db/Transaction.html" title="class in com.sleepycat.db">Transaction</A> txn,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> key,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> pKey,
<A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> data,
<A HREF="../../../com/sleepycat/db/LockMode.html" title="class in com.sleepycat.db">LockMode</A> lockMode)
throws <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></PRE>
<DL>
<DD>Retrieves the key/data pair associated with the specific numbered record of the database.
<p>
The data field of the specified key must be a byte array containing a
record number, as described in <A HREF="../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db"><CODE>DatabaseEntry</CODE></A>. This determines
the record to be retrieved.
<p>
For this method to be called, the underlying database must be of type
Btree, and it must have been configured to support record numbers.
<p>
If this method fails for any reason, the position of the cursor will be
unchanged.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - the secondary key
returned as output. Its byte array does not need to be initialized by the
caller.<DD><CODE>pKey</CODE> - the primary key
returned as output. Its byte array does not need to be initialized by the
caller.<DD><CODE>data</CODE> - the primary data
returned as output. Multiple results can be retrieved by passing an object
that is a subclass of <A HREF="../../../com/sleepycat/db/MultipleEntry.html" title="class in com.sleepycat.db"><CODE>MultipleEntry</CODE></A>, otherwise its byte array does not
need to be initialized by the caller.<DD><CODE>lockMode</CODE> - the locking attributes; if null, default attributes are used.
<DT><B>Returns:</B><DD><A HREF="../../../com/sleepycat/db/OperationStatus.html#NOTFOUND"><CODE>OperationStatus.NOTFOUND</CODE></A> if no matching key/data pair is
found; otherwise, <A HREF="../../../com/sleepycat/db/OperationStatus.html#SUCCESS"><CODE>OperationStatus.SUCCESS</CODE></A>.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/NullPointerException.html" title="class or interface in java.lang">NullPointerException</A></CODE> - if a DatabaseEntry parameter is null or
does not contain a required non-null byte array.
<p>
<DD><CODE><A HREF="../../../com/sleepycat/db/DeadlockException.html" title="class in com.sleepycat.db">DeadlockException</A></CODE> - if the operation was selected to resolve a
deadlock.
<p>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if an invalid parameter was specified.
<p>
<DD><CODE><A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</A></CODE> - if a failure occurs.
<p></DL>
</DD>
</DL>
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