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jala.db.RamDatabase
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<H2>Class jala.db.RamDatabase</H2>
<PRE>Object
|
+--<b>jala.db.RamDatabase</b>
</PRE>
<DL>
<DT>
<B>Direct Known Subclasses:</B>
<DD>
<a href="jala.db.FileDatabase.html">jala.db.FileDatabase</a>
</DD>
</DL>
<HR>
<DL>
<!-- Class definition -->
<DT>class
<B>jala.db.RamDatabase</B>
</DL>
<P>
<BR/>Instances of this class represent an in-memory sql database.
<br /><strong>Important:</strong> You need the h2.jar in directory "lib/ext"
of your helma installation for this library to work, which you can get
at http://www.h2database.com/.
<BR/><I>Defined in <a href='overview-summary-Database.js.html'>Database.js</a></I><BR/><BR/>
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<CODE>
<B>
<A HREF="jala.db.RamDatabase.html#jala.db.RamDatabase()">jala.db.RamDatabase</A>
</B>
(&lt;String&gt; name, &lt;String&gt; username, &lt;String&gt; password)
</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Returns a newly created RamDatabase instance.
</TD>
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<FONT SIZE="-1">
<CODE>&nbsp;void</CODE>
</FONT>
</TD>
<TD>
<CODE>
<B>
<A HREF="#copyTables">copyTables</A></B>(&lt;helma.Database&gt; database, &lt;Array&gt; tables)
</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Copies all tables in the database passed as argument into this embedded database.
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<FONT SIZE="-1">
<CODE>&nbsp;Boolean</CODE>
</FONT>
</TD>
<TD>
<CODE>
<B>
<A HREF="#dropTable">dropTable</A></B>(&lt;String&gt; tableName)
</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Drops the table with the given name
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<FONT SIZE="-1">
<CODE>&nbsp;Boolean</CODE>
</FONT>
</TD>
<TD>
<CODE>
<B>
<A HREF="#dump">dump</A></B>(&lt;helma.File&gt; file, &lt;Object&gt; props)
</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Dumps the database schema and data into a file
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<FONT SIZE="-1">
<CODE>&nbsp;helma.Database</CODE>
</FONT>
</TD>
<TD>
<CODE>
<B>
<A HREF="#getConnection">getConnection</A></B>(props)
</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Returns a connection to this database
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<FONT SIZE="-1">
<CODE>&nbsp;String</CODE>
</FONT>
</TD>
<TD>
<CODE>
<B>
<A HREF="#getName">getName</A></B>()
</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Returns the name of the database
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<FONT SIZE="-1">
<CODE>&nbsp;String</CODE>
</FONT>
</TD>
<TD>
<CODE>
<B>
<A HREF="#getPassword">getPassword</A></B>()
</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Returns the password of this database
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<FONT SIZE="-1">
<CODE>&nbsp;helma.util.ResourceProperties</CODE>
</FONT>
</TD>
<TD>
<CODE>
<B>
<A HREF="#getProperties">getProperties</A></B>(&lt;Object&gt; props)
</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Returns a properties object containing the connection properties
for this database.
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<FONT SIZE="-1">
<CODE>&nbsp;String</CODE>
</FONT>
</TD>
<TD>
<CODE>
<B>
<A HREF="#getUrl">getUrl</A></B>(&lt;Object&gt; props)
</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Returns the JDBC Url to connect to this database
</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<FONT SIZE="-1">
<CODE>&nbsp;String</CODE>
</FONT>
</TD>
<TD>
<CODE>
<B>
<A HREF="#getUsername">getUsername</A></B>()
</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Returns the username of this database
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<FONT SIZE="-1">
<CODE>&nbsp;Boolean</CODE>
</FONT>
</TD>
<TD>
<CODE>
<B>
<A HREF="#runScript">runScript</A></B>(&lt;helma.File&gt; file, &lt;Object&gt; props, &lt;String&gt; charset, &lt;Boolean&gt; continueOnError)
</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Runs the script file passed as argument in the context of this database.
</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<FONT SIZE="-1">
<CODE>&nbsp;void</CODE>
</FONT>
</TD>
<TD>
<CODE>
<B>
<A HREF="#shutdown">shutdown</A></B>()
</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Stops this in-process database by issueing a "SHUTDOWN" sql command.
</TD>
</TR>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<FONT SIZE="-1">
<CODE>&nbsp;Boolean</CODE>
</FONT>
</TD>
<TD>
<CODE>
<B>
<A HREF="#tableExists">tableExists</A></B>(&lt;String&gt; name)
</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Returns true if the table exists already in the database
</TD>
</TR>
</TABLE>
<P>
<!-- ========== END METHOD SUMMARY =========== -->
<!-- ============ FIELD DETAIL START =========== -->
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</TD>
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</TABLE>
<A NAME="jala.db.RamDatabase()"><!-- --></A><H3>
jala.db.RamDatabase</H3>
<PRE><B>jala.db.RamDatabase</B>(&lt;String&gt; name, &lt;String&gt; username, &lt;String&gt; password)</PRE>
<UL>
Returns a newly created RamDatabase instance.
</UL>
<UL>
<B>Parameters:</B>
<UL><CODE>name</CODE> - The name of the database. If not given a private un-named database is created, that can only be accessed through this instance of jala.db.RamDatabase
</UL>
<UL><CODE>username</CODE> - Optional username (defaults to "sa"). This username is used when creating the database, so the same should be used when creating subsequent instances of jala.db.RamDatabase pointing to a named database.
</UL>
<UL><CODE>password</CODE> - Optional password (defaults to "").
</UL>
</UL>
<!-- Constructor return value(s) -->
<UL>
<B>Returns:</B>
<UL>
A newly created instance of RamDatabase
</UL>
</UL>
<!-- End constructor return value(s) -->
<!-- ADDITIONAL ATTRIBUTES -->
<HR/>
<!-- END ADDITIONAL ATTRIBUTES -->
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<!-- One single method detail entry -->
<A NAME="copyTables"><!-- --></A>
<H3>copyTables</H3>
<PRE>void <B>copyTables</B>(&lt;helma.Database&gt; database, &lt;Array&gt; tables)</PRE>
<UL>Copies all tables in the database passed as argument into this embedded database.
If any of the tables already exists in this database, they will be removed before
re-created. Please mind that this method ignores any indexes in the source database,
but respects the primary key settings.</UL>
<!-- METHOD PARAMETERS START -->
<UL>
<B>Parameters:</B>
<UL><CODE>database</CODE> - The database to copy the tables from
</UL>
<UL><CODE>tables</CODE> - An optional array containing the names of the tables to copy. If not given all tables are copied
</UL>
</UL>
<!-- METHOD PARAMETERS END -->
<!-- ADDITIONAL ATTRIBUTES START -->
<!-- ADDITIONAL ATTRIBUTES END -->
<HR>
<A NAME="dropTable"><!-- --></A>
<H3>dropTable</H3>
<PRE>Boolean <B>dropTable</B>(&lt;String&gt; tableName)</PRE>
<UL>Drops the table with the given name</UL>
<!-- METHOD PARAMETERS START -->
<UL>
<B>Parameters:</B>
<UL><CODE>tableName</CODE> - The name of the table
</UL>
</UL>
<!-- METHOD PARAMETERS END -->
<UL>
<B>Returns:</B>
<UL>
True if the table was successfully dropped, false otherwise
</UL>
</UL>
<!-- ADDITIONAL ATTRIBUTES START -->
<!-- ADDITIONAL ATTRIBUTES END -->
<HR>
<A NAME="dump"><!-- --></A>
<H3>dump</H3>
<PRE>Boolean <B>dump</B>(&lt;helma.File&gt; file, &lt;Object&gt; props)</PRE>
<UL>Dumps the database schema and data into a file</UL>
<!-- METHOD PARAMETERS START -->
<UL>
<B>Parameters:</B>
<UL><CODE>file</CODE> - The file where the database dump will be
</UL>
<UL><CODE>props</CODE> - Optional object containing connection properties
</UL>
</UL>
<!-- METHOD PARAMETERS END -->
<UL>
<B>Returns:</B>
<UL>
True in case the database was successfully dumped, false otherwise
</UL>
</UL>
<!-- ADDITIONAL ATTRIBUTES START -->
<!-- ADDITIONAL ATTRIBUTES END -->
<HR>
<A NAME="getConnection"><!-- --></A>
<H3>getConnection</H3>
<PRE>helma.Database <B>getConnection</B>(props)</PRE>
<UL>Returns a connection to this database</UL>
<!-- METHOD PARAMETERS START -->
<UL>
<B>Parameters:</B>
<UL><CODE>An</CODE> - optional parameter object containing connection properties to add to the connection Url.
</UL>
</UL>
<!-- METHOD PARAMETERS END -->
<UL>
<B>Returns:</B>
<UL>
A connection to this database
</UL>
</UL>
<!-- ADDITIONAL ATTRIBUTES START -->
<!-- ADDITIONAL ATTRIBUTES END -->
<HR>
<A NAME="getName"><!-- --></A>
<H3>getName</H3>
<PRE>String <B>getName</B>()</PRE>
<UL>Returns the name of the database</UL>
<!-- METHOD PARAMETERS START -->
<!-- METHOD PARAMETERS END -->
<UL>
<B>Returns:</B>
<UL>
The name of the database
</UL>
</UL>
<!-- ADDITIONAL ATTRIBUTES START -->
<!-- ADDITIONAL ATTRIBUTES END -->
<HR>
<A NAME="getPassword"><!-- --></A>
<H3>getPassword</H3>
<PRE>String <B>getPassword</B>()</PRE>
<UL>Returns the password of this database</UL>
<!-- METHOD PARAMETERS START -->
<!-- METHOD PARAMETERS END -->
<UL>
<B>Returns:</B>
<UL>
The password of this database
</UL>
</UL>
<!-- ADDITIONAL ATTRIBUTES START -->
<!-- ADDITIONAL ATTRIBUTES END -->
<HR>
<A NAME="getProperties"><!-- --></A>
<H3>getProperties</H3>
<PRE>helma.util.ResourceProperties <B>getProperties</B>(&lt;Object&gt; props)</PRE>
<UL>Returns a properties object containing the connection properties
for this database.</UL>
<!-- METHOD PARAMETERS START -->
<UL>
<B>Parameters:</B>
<UL><CODE>props</CODE> - An optional parameter object containing connection properties to add to the connection Url.
</UL>
</UL>
<!-- METHOD PARAMETERS END -->
<UL>
<B>Returns:</B>
<UL>
A properties object containing the connection properties
</UL>
</UL>
<!-- ADDITIONAL ATTRIBUTES START -->
<!-- ADDITIONAL ATTRIBUTES END -->
<HR>
<A NAME="getUrl"><!-- --></A>
<H3>getUrl</H3>
<PRE>String <B>getUrl</B>(&lt;Object&gt; props)</PRE>
<UL>Returns the JDBC Url to connect to this database</UL>
<!-- METHOD PARAMETERS START -->
<UL>
<B>Parameters:</B>
<UL><CODE>props</CODE> - Optional connection properties to add
</UL>
</UL>
<!-- METHOD PARAMETERS END -->
<UL>
<B>Returns:</B>
<UL>
The JDBC url to use for connecting to this database
</UL>
</UL>
<!-- ADDITIONAL ATTRIBUTES START -->
<!-- ADDITIONAL ATTRIBUTES END -->
<HR>
<A NAME="getUsername"><!-- --></A>
<H3>getUsername</H3>
<PRE>String <B>getUsername</B>()</PRE>
<UL>Returns the username of this database</UL>
<!-- METHOD PARAMETERS START -->
<!-- METHOD PARAMETERS END -->
<UL>
<B>Returns:</B>
<UL>
The username of this database
</UL>
</UL>
<!-- ADDITIONAL ATTRIBUTES START -->
<!-- ADDITIONAL ATTRIBUTES END -->
<HR>
<A NAME="runScript"><!-- --></A>
<H3>runScript</H3>
<PRE>Boolean <B>runScript</B>(&lt;helma.File&gt; file, &lt;Object&gt; props, &lt;String&gt; charset, &lt;Boolean&gt; continueOnError)</PRE>
<UL>Runs the script file passed as argument in the context of this database.
Use this method to eg. create and/or populate a database.</UL>
<!-- METHOD PARAMETERS START -->
<UL>
<B>Parameters:</B>
<UL><CODE>file</CODE> - The script file to run
</UL>
<UL><CODE>props</CODE> - Optional object containing connection properties
</UL>
<UL><CODE>charset</CODE> - Optional character set to use (defaults to "UTF-8")
</UL>
<UL><CODE>continueOnError</CODE> - Optional flag indicating whether to continue on error or not (defaults to false)
</UL>
</UL>
<!-- METHOD PARAMETERS END -->
<UL>
<B>Returns:</B>
<UL>
True in case the script was executed successfully, false otherwise
</UL>
</UL>
<!-- ADDITIONAL ATTRIBUTES START -->
<!-- ADDITIONAL ATTRIBUTES END -->
<HR>
<A NAME="shutdown"><!-- --></A>
<H3>shutdown</H3>
<PRE>void <B>shutdown</B>()</PRE>
<UL>Stops this in-process database by issueing a "SHUTDOWN" sql command.</UL>
<!-- METHOD PARAMETERS START -->
<!-- METHOD PARAMETERS END -->
<!-- ADDITIONAL ATTRIBUTES START -->
<!-- ADDITIONAL ATTRIBUTES END -->
<HR>
<A NAME="tableExists"><!-- --></A>
<H3>tableExists</H3>
<PRE>Boolean <B>tableExists</B>(&lt;String&gt; name)</PRE>
<UL>Returns true if the table exists already in the database</UL>
<!-- METHOD PARAMETERS START -->
<UL>
<B>Parameters:</B>
<UL><CODE>name</CODE> - The name of the table
</UL>
</UL>
<!-- METHOD PARAMETERS END -->
<UL>
<B>Returns:</B>
<UL>
True if the table exists, false otherwise
</UL>
</UL>
<!-- ADDITIONAL ATTRIBUTES START -->
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