databasejni.html

FastDb是高效的内存数据库系统

public <B>DatabaseJNI</B>(boolean&nbsp;remote)</PRE>
<DL>
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<A NAME="open(int, java.lang.String, java.lang.String, long, int)"><!-- --></A><H3>
open</H3>
<PRE>
public void <B>open</B>(int&nbsp;accessType,
                 java.lang.String&nbsp;databaseName,
                 java.lang.String&nbsp;databasePath,
                 long&nbsp;initSize,
                 int&nbsp;transactionCommitDelay)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></B></DD>
<DD>Open database
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../jnicli/Database.html#open(int, java.lang.String, java.lang.String, long, int)">open</A></CODE> in interface <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>accessType</CODE> - database access type: one of READ_ONLY, READ_WRITE, CONCURRENT_READ or CONCURRENT_UPDATE<DD><CODE>databaseName</CODE> - database name<DD><CODE>databasePath</CODE> - path to the database file<DD><CODE>initSize</CODE> - initial size of database<DD><CODE>transactionCommitDelay</CODE> - transaction commit delay (specify 0 to disable)</DL>
</DD>
</DL>
<HR>

<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
public void <B>close</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></B></DD>
<DD>Close database
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../jnicli/Database.html#close()">close</A></CODE> in interface <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="select(java.lang.Class, java.lang.String, int)"><!-- --></A><H3>
select</H3>
<PRE>
public <A HREF="../jnicli/Cursor.html" title="interface in jnicli">Cursor</A> <B>select</B>(java.lang.Class&nbsp;table,
                     java.lang.String&nbsp;condition,
                     int&nbsp;flags)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></B></DD>
<DD>Select objects from table matching condition
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../jnicli/Database.html#select(java.lang.Class, java.lang.String, int)">select</A></CODE> in interface <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>table</CODE> - class corresponding to the table<DD><CODE>condition</CODE> - SubSQL condition (to select all records pass empty string)<DD><CODE>flags</CODE> - combination of FOR_UPDATE and AUTOCOMMIT flags
<DT><B>Returns:</B><DD>cursor for selected objects. Cursor can be either incremental, when records are extracted on 
 demand or prefetched. Prefetched cursor is used for remote database and when AUTOCOMMIT flag is set.
 Prefetched cursor doesn't allow in place updates.</DL>
</DD>
</DL>
<HR>

<A NAME="update(long, java.lang.Object)"><!-- --></A><H3>
update</H3>
<PRE>
public void <B>update</B>(long&nbsp;oid,
                   java.lang.Object&nbsp;obj)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></B></DD>
<DD>Update object with soecified OID
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../jnicli/Database.html#update(long, java.lang.Object)">update</A></CODE> in interface <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>oid</CODE> - OID of updated object<DD><CODE>obj</CODE> - updated object</DL>
</DD>
</DL>
<HR>

<A NAME="insert(java.lang.Object)"><!-- --></A><H3>
insert</H3>
<PRE>
public long <B>insert</B>(java.lang.Object&nbsp;obj)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></B></DD>
<DD>Insert new object in the database. Object will be inserted in the table with the same name
 as object class
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../jnicli/Database.html#insert(java.lang.Object)">insert</A></CODE> in interface <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>obj</CODE> - inserted object
<DT><B>Returns:</B><DD>OID of inserted object</DL>
</DD>
</DL>
<HR>

<A NAME="delete(java.lang.Class, java.lang.String)"><!-- --></A><H3>
delete</H3>
<PRE>
public int <B>delete</B>(java.lang.Class&nbsp;table,
                  java.lang.String&nbsp;condition)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></B></DD>
<DD>Delete all objects from the table matching specified condition
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../jnicli/Database.html#delete(java.lang.Class, java.lang.String)">delete</A></CODE> in interface <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>table</CODE> - class corresponding to the table<DD><CODE>condition</CODE> - SubSQL condition (to delete all records pass empty string)
<DT><B>Returns:</B><DD>number of deleted objects</DL>
</DD>
</DL>
<HR>

<A NAME="commit()"><!-- --></A><H3>
commit</H3>
<PRE>
public void <B>commit</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></B></DD>
<DD>Commit current transaction. 
 Transaction is implicitly started when any database operation is perfromed.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../jnicli/Database.html#commit()">commit</A></CODE> in interface <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="rollback()"><!-- --></A><H3>
rollback</H3>
<PRE>
public void <B>rollback</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></B></DD>
<DD>Commit current transaction
 Transaction is implicitly started when any database operation is perfromed.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../jnicli/Database.html#rollback()">rollback</A></CODE> in interface <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="lock()"><!-- --></A><H3>
lock</H3>
<PRE>
public void <B>lock</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></B></DD>
<DD>Lock database in exclusive mode.
 Lock is automatically released when transaction is committed or aborted
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../jnicli/Database.html#lock()">lock</A></CODE> in interface <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="attach()"><!-- --></A><H3>
attach</H3>
<PRE>
public void <B>attach</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></B></DD>
<DD>Attach thread to the database. All threads except the one opened the database should
 invoke this method before start working with database
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../jnicli/Database.html#attach()">attach</A></CODE> in interface <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="detach(int)"><!-- --></A><H3>
detach</H3>
<PRE>
public void <B>detach</B>(int&nbsp;flags)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></B></DD>
<DD>Detach thread to the database. All threads except the one opened the database should
 invoke this method before start working with database
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../jnicli/Database.html#detach(int)">detach</A></CODE> in interface <CODE><A HREF="../jnicli/Database.html" title="interface in jnicli">Database</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>flags</CODE> - combination of CLI_DETACH_COMMIT and CLI_DETACH_DESTROY_CONTEXT flags</DL>
</DD>
</DL>
<HR>

<A NAME="setThreadContext(long)"><!-- --></A><H3>
setThreadContext</H3>
<PRE>
public void <B>setThreadContext</B>(long&nbsp;ctx)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getThreadContext()"><!-- --></A><H3>
getThreadContext</H3>
<PRE>
public long <B>getThreadContext</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
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