📄 databaseutils.html
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<CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/experiment/DatabaseUtils.html#experimentIndexExists()">experimentIndexExists</A></B>()</CODE><BR> Returns true if the experiment index exists.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/experiment/DatabaseUtils.html#getDatabaseURL()">getDatabaseURL</A></B>()</CODE><BR> Get the value of DatabaseURL.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.Object[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/experiment/DatabaseUtils.html#getResultFromTable(java.lang.String, weka.experiment.ResultProducer, java.lang.Object[])">getResultFromTable</A></B>(java.lang.String tableName, <A HREF="../../weka/experiment/ResultProducer.html">ResultProducer</A> rp, java.lang.Object[] key)</CODE><BR> Executes a database query to extract a result for the supplied key from the database.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.sql.ResultSet</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/experiment/DatabaseUtils.html#getResultSet()">getResultSet</A></B>()</CODE><BR> Gets the results generated by a previous query.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/experiment/DatabaseUtils.html#getResultsTableName(weka.experiment.ResultProducer)">getResultsTableName</A></B>(<A HREF="../../weka/experiment/ResultProducer.html">ResultProducer</A> rp)</CODE><BR> Gets the name of the experiment table that stores results from a particular ResultProducer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/experiment/DatabaseUtils.html#isConnected()">isConnected</A></B>()</CODE><BR> Returns true if a database connection is active.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/experiment/DatabaseUtils.html#isKeyInTable(java.lang.String, weka.experiment.ResultProducer, java.lang.Object[])">isKeyInTable</A></B>(java.lang.String tableName, <A HREF="../../weka/experiment/ResultProducer.html">ResultProducer</A> rp, java.lang.Object[] key)</CODE><BR> Executes a database query to see whether a result for the supplied key is already in the database.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/experiment/DatabaseUtils.html#putResultInTable(java.lang.String, weka.experiment.ResultProducer, java.lang.Object[], java.lang.Object[])">putResultInTable</A></B>(java.lang.String tableName, <A HREF="../../weka/experiment/ResultProducer.html">ResultProducer</A> rp, java.lang.Object[] key, java.lang.Object[] result)</CODE><BR> Executes a database query to insert a result for the supplied key into the database.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/experiment/DatabaseUtils.html#setDatabaseURL(java.lang.String)">setDatabaseURL</A></B>(java.lang.String newDatabaseURL)</CODE><BR> Set the value of DatabaseURL.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/experiment/DatabaseUtils.html#tableExists(java.lang.String)">tableExists</A></B>(java.lang.String tableName)</CODE><BR> Checks that a given table exists.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/experiment/DatabaseUtils.html#typeName(int)">typeName</A></B>(int type)</CODE><BR> Returns the name associated with a SQL type.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.Object</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><A NAME="field_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Field Detail</B></FONT></TD></TR></TABLE><A NAME="EXP_INDEX_TABLE"><!-- --></A><H3>EXP_INDEX_TABLE</H3><PRE>public static final java.lang.String <B>EXP_INDEX_TABLE</B></PRE><DL><DD>The name of the table containing the index to experiments</DL><HR><A NAME="EXP_TYPE_COL"><!-- --></A><H3>EXP_TYPE_COL</H3><PRE>public static final java.lang.String <B>EXP_TYPE_COL</B></PRE><DL><DD>The name of the column containing the experiment type (ResultProducer)</DL><HR><A NAME="EXP_SETUP_COL"><!-- --></A><H3>EXP_SETUP_COL</H3><PRE>public static final java.lang.String <B>EXP_SETUP_COL</B></PRE><DL><DD>The name of the column containing the experiment setup (parameters)</DL><HR><A NAME="EXP_RESULT_COL"><!-- --></A><H3>EXP_RESULT_COL</H3><PRE>public static final java.lang.String <B>EXP_RESULT_COL</B></PRE><DL><DD>The name of the column containing the results table name</DL><HR><A NAME="EXP_RESULT_PREFIX"><!-- --></A><H3>EXP_RESULT_PREFIX</H3><PRE>public static final java.lang.String <B>EXP_RESULT_PREFIX</B></PRE><DL><DD>The prefix for result table names</DL><HR><A NAME="PROPERTY_FILE"><!-- --></A><H3>PROPERTY_FILE</H3><PRE>protected static java.lang.String <B>PROPERTY_FILE</B></PRE><DL><DD>The name of the properties file</DL><HR><A NAME="DRIVERS"><!-- --></A><H3>DRIVERS</H3><PRE>protected static java.util.Vector <B>DRIVERS</B></PRE><DL><DD>Holds the jdbc drivers to be used (only to stop them being gc'ed)</DL><HR><A NAME="PROPERTIES"><!-- --></A><H3>PROPERTIES</H3><PRE>protected static java.util.Properties <B>PROPERTIES</B></PRE><DL><DD>Properties associated with the database connection</DL><HR><A NAME="m_DatabaseURL"><!-- --></A><H3>m_DatabaseURL</H3><PRE>protected java.lang.String <B>m_DatabaseURL</B></PRE><DL><DD>Database URL</DL><HR><A NAME="m_Connection"><!-- --></A><H3>m_Connection</H3><PRE>protected java.sql.Connection <B>m_Connection</B></PRE><DL><DD>The database connection</DL><HR><A NAME="m_Statement"><!-- --></A><H3>m_Statement</H3><PRE>protected java.sql.Statement <B>m_Statement</B></PRE><DL><DD>The statement used for database queries</DL><HR><A NAME="m_Debug"><!-- --></A><H3>m_Debug</H3><PRE>protected boolean <B>m_Debug</B></PRE><DL><DD>True if debugging output should be printed</DL><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD></TR></TABLE><A NAME="DatabaseUtils()"><!-- --></A><H3>DatabaseUtils</H3><PRE>public <B>DatabaseUtils</B>() throws java.lang.Exception</PRE><DL><DD>Sets up the database drivers<DD><DL><DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if an error occurs</DL></DD></DL><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="arrayToString(java.lang.Object[])"><!-- --></A><H3>arrayToString</H3><PRE>public static java.lang.String <B>arrayToString</B>(java.lang.Object[] array)</PRE><DL><DD>Converts an array of objects to a string by inserting a space between each element. Null elements are printed as ?<DD><DL></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>array</CODE> - the array of objects<DT><B>Returns:</B><DD>a value of type 'String'</DL></DD></DL><HR><A NAME="typeName(int)"><!-- --></A><H3>typeName</H3><PRE>public static java.lang.String <B>typeName</B>(int type)</PRE><DL><DD>Returns the name associated with a SQL type.<DD><DL></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>type</CODE> - the SQL type<DT><B>Returns:</B><DD>the name of the type</DL></DD></DL><HR><A NAME="databaseURLTipText()"><!-- --></A><H3>databaseURLTipText</H3><PRE>public java.lang.String <B>databaseURLTipText</B>()</PRE><DL><DD>Returns the tip text for this property<DD><DL></DL></DD><DD><DL><DT><B>Returns:</B><DD>tip text for this property suitable for displaying in the explorer/experimenter gui</DL></DD></DL><HR><A NAME="getDatabaseURL()"><!-- --></A><H3>getDatabaseURL</H3><PRE>public java.lang.String <B>getDatabaseURL</B>()</PRE>⌨️ 快捷键说明
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