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BasicDB
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com.yahoo.ycsb</FONT>
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Class BasicDB</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../com/yahoo/ycsb/DB.html" title="class in com.yahoo.ycsb">com.yahoo.ycsb.DB</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>com.yahoo.ycsb.BasicDB</B>
</PRE>
<HR>
<DL>
<DT><PRE>public class <B>BasicDB</B><DT>extends <A HREF="../../../com/yahoo/ycsb/DB.html" title="class in com.yahoo.ycsb">DB</A></DL>
</PRE>
<P>
Basic DB that just prints out the requested operations, instead of doing them against a database.
<P>
<P>
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<CODE>static&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/yahoo/ycsb/BasicDB.html#SIMULATE_DELAY">SIMULATE_DELAY</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/yahoo/ycsb/BasicDB.html#SIMULATE_DELAY_DEFAULT">SIMULATE_DELAY_DEFAULT</A></B></CODE>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<CODE>static&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/yahoo/ycsb/BasicDB.html#VERBOSE">VERBOSE</A></B></CODE>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<CODE>static&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/yahoo/ycsb/BasicDB.html#VERBOSE_DEFAULT">VERBOSE_DEFAULT</A></B></CODE>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<TD><CODE><B><A HREF="../../../com/yahoo/ycsb/BasicDB.html#BasicDB()">BasicDB</A></B>()</CODE>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/yahoo/ycsb/BasicDB.html#delete(java.lang.String, java.lang.String)">delete</A></B>(java.lang.String&nbsp;table,
java.lang.String&nbsp;key)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Delete a record from the database.</TD>
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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/yahoo/ycsb/BasicDB.html#init()">init</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Initialize any state for this DB.</TD>
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<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/yahoo/ycsb/BasicDB.html#insert(java.lang.String, java.lang.String, java.util.HashMap)">insert</A></B>(java.lang.String&nbsp;table,
java.lang.String&nbsp;key,
java.util.HashMap&lt;java.lang.String,java.lang.String&gt;&nbsp;values)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Insert a record in the database.</TD>
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<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/yahoo/ycsb/BasicDB.html#read(java.lang.String, java.lang.String, java.util.Set, java.util.HashMap)">read</A></B>(java.lang.String&nbsp;table,
java.lang.String&nbsp;key,
java.util.Set&lt;java.lang.String&gt;&nbsp;fields,
java.util.HashMap&lt;java.lang.String,java.lang.String&gt;&nbsp;result)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Read a record from the database.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/yahoo/ycsb/BasicDB.html#scan(java.lang.String, java.lang.String, int, java.util.Set, java.util.Vector)">scan</A></B>(java.lang.String&nbsp;table,
java.lang.String&nbsp;startkey,
int&nbsp;recordcount,
java.util.Set&lt;java.lang.String&gt;&nbsp;fields,
java.util.Vector&lt;java.util.HashMap&lt;java.lang.String,java.lang.String&gt;&gt;&nbsp;result)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Perform a range scan for a set of records in the database.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/yahoo/ycsb/BasicDB.html#update(java.lang.String, java.lang.String, java.util.HashMap)">update</A></B>(java.lang.String&nbsp;table,
java.lang.String&nbsp;key,
java.util.HashMap&lt;java.lang.String,java.lang.String&gt;&nbsp;values)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Update a record in the database.</TD>
</TR>
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&nbsp;<A NAME="methods_inherited_from_class_com.yahoo.ycsb.DB"><!-- --></A>
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<TH ALIGN="left"><B>Methods inherited from class com.yahoo.ycsb.<A HREF="../../../com/yahoo/ycsb/DB.html" title="class in com.yahoo.ycsb">DB</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../com/yahoo/ycsb/DB.html#cleanup()">cleanup</A>, <A HREF="../../../com/yahoo/ycsb/DB.html#getProperties()">getProperties</A>, <A HREF="../../../com/yahoo/ycsb/DB.html#setProperties(java.util.Properties)">setProperties</A></CODE></TD>
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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&nbsp;
<P>
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<A NAME="VERBOSE"><!-- --></A><H3>
VERBOSE</H3>
<PRE>
public static final java.lang.String <B>VERBOSE</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#com.yahoo.ycsb.BasicDB.VERBOSE">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="VERBOSE_DEFAULT"><!-- --></A><H3>
VERBOSE_DEFAULT</H3>
<PRE>
public static final java.lang.String <B>VERBOSE_DEFAULT</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#com.yahoo.ycsb.BasicDB.VERBOSE_DEFAULT">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="SIMULATE_DELAY"><!-- --></A><H3>
SIMULATE_DELAY</H3>
<PRE>
public static final java.lang.String <B>SIMULATE_DELAY</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#com.yahoo.ycsb.BasicDB.SIMULATE_DELAY">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="SIMULATE_DELAY_DEFAULT"><!-- --></A><H3>
SIMULATE_DELAY_DEFAULT</H3>
<PRE>
public static final java.lang.String <B>SIMULATE_DELAY_DEFAULT</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#com.yahoo.ycsb.BasicDB.SIMULATE_DELAY_DEFAULT">Constant Field Values</A></DL>
</DL>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<A NAME="BasicDB()"><!-- --></A><H3>
BasicDB</H3>
<PRE>
public <B>BasicDB</B>()</PRE>
<DL>
</DL>
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<A NAME="init()"><!-- --></A><H3>
init</H3>
<PRE>
public void <B>init</B>()</PRE>
<DL>
<DD>Initialize any state for this DB.
Called once per DB instance; there is one DB instance per client thread.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../com/yahoo/ycsb/DB.html#init()">init</A></CODE> in class <CODE><A HREF="../../../com/yahoo/ycsb/DB.html" title="class in com.yahoo.ycsb">DB</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="read(java.lang.String, java.lang.String, java.util.Set, java.util.HashMap)"><!-- --></A><H3>
read</H3>
<PRE>
public int <B>read</B>(java.lang.String&nbsp;table,
java.lang.String&nbsp;key,
java.util.Set&lt;java.lang.String&gt;&nbsp;fields,
java.util.HashMap&lt;java.lang.String,java.lang.String&gt;&nbsp;result)</PRE>
<DL>
<DD>Read a record from the database. Each field/value pair from the result will be stored in a HashMap.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../com/yahoo/ycsb/DB.html#read(java.lang.String, java.lang.String, java.util.Set, java.util.HashMap)">read</A></CODE> in class <CODE><A HREF="../../../com/yahoo/ycsb/DB.html" title="class in com.yahoo.ycsb">DB</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>table</CODE> - The name of the table<DD><CODE>key</CODE> - The record key of the record to read.<DD><CODE>fields</CODE> - The list of fields to read, or null for all of them<DD><CODE>result</CODE> - A HashMap of field/value pairs for the result
<DT><B>Returns:</B><DD>Zero on success, a non-zero error code on error</DL>
</DD>
</DL>
<HR>
<A NAME="scan(java.lang.String, java.lang.String, int, java.util.Set, java.util.Vector)"><!-- --></A><H3>
scan</H3>
<PRE>
public int <B>scan</B>(java.lang.String&nbsp;table,
java.lang.String&nbsp;startkey,
int&nbsp;recordcount,
java.util.Set&lt;java.lang.String&gt;&nbsp;fields,
java.util.Vector&lt;java.util.HashMap&lt;java.lang.String,java.lang.String&gt;&gt;&nbsp;result)</PRE>
<DL>
<DD>Perform a range scan for a set of records in the database. Each field/value pair from the result will be stored in a HashMap.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../com/yahoo/ycsb/DB.html#scan(java.lang.String, java.lang.String, int, java.util.Set, java.util.Vector)">scan</A></CODE> in class <CODE><A HREF="../../../com/yahoo/ycsb/DB.html" title="class in com.yahoo.ycsb">DB</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>table</CODE> - The name of the table<DD><CODE>startkey</CODE> - The record key of the first record to read.<DD><CODE>recordcount</CODE> - The number of records to read<DD><CODE>fields</CODE> - The list of fields to read, or null for all of them<DD><CODE>result</CODE> - A Vector of HashMaps, where each HashMap is a set field/value pairs for one record
<DT><B>Returns:</B><DD>Zero on success, a non-zero error code on error</DL>
</DD>
</DL>
<HR>
<A NAME="update(java.lang.String, java.lang.String, java.util.HashMap)"><!-- --></A><H3>
update</H3>
<PRE>
public int <B>update</B>(java.lang.String&nbsp;table,
java.lang.String&nbsp;key,
java.util.HashMap&lt;java.lang.String,java.lang.String&gt;&nbsp;values)</PRE>
<DL>
<DD>Update a record in the database. Any field/value pairs in the specified values HashMap will be written into the record with the specified
record key, overwriting any existing values with the same field name.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../com/yahoo/ycsb/DB.html#update(java.lang.String, java.lang.String, java.util.HashMap)">update</A></CODE> in class <CODE><A HREF="../../../com/yahoo/ycsb/DB.html" title="class in com.yahoo.ycsb">DB</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>table</CODE> - The name of the table<DD><CODE>key</CODE> - The record key of the record to write.<DD><CODE>values</CODE> - A HashMap of field/value pairs to update in the record
<DT><B>Returns:</B><DD>Zero on success, a non-zero error code on error</DL>
</DD>
</DL>
<HR>
<A NAME="insert(java.lang.String, java.lang.String, java.util.HashMap)"><!-- --></A><H3>
insert</H3>
<PRE>
public int <B>insert</B>(java.lang.String&nbsp;table,
java.lang.String&nbsp;key,
java.util.HashMap&lt;java.lang.String,java.lang.String&gt;&nbsp;values)</PRE>
<DL>
<DD>Insert a record in the database. Any field/value pairs in the specified values HashMap will be written into the record with the specified
record key.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../com/yahoo/ycsb/DB.html#insert(java.lang.String, java.lang.String, java.util.HashMap)">insert</A></CODE> in class <CODE><A HREF="../../../com/yahoo/ycsb/DB.html" title="class in com.yahoo.ycsb">DB</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>table</CODE> - The name of the table<DD><CODE>key</CODE> - The record key of the record to insert.<DD><CODE>values</CODE> - A HashMap of field/value pairs to insert in the record
<DT><B>Returns:</B><DD>Zero on success, a non-zero error code on error</DL>
</DD>
</DL>
<HR>
<A NAME="delete(java.lang.String, java.lang.String)"><!-- --></A><H3>
delete</H3>
<PRE>
public int <B>delete</B>(java.lang.String&nbsp;table,
java.lang.String&nbsp;key)</PRE>
<DL>
<DD>Delete a record from the database.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../com/yahoo/ycsb/DB.html#delete(java.lang.String, java.lang.String)">delete</A></CODE> in class <CODE><A HREF="../../../com/yahoo/ycsb/DB.html" title="class in com.yahoo.ycsb">DB</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>table</CODE> - The name of the table<DD><CODE>key</CODE> - The record key of the record to delete.
<DT><B>Returns:</B><DD>Zero on success, a non-zero error code on error</DL>
</DD>
</DL>
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