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package org.apache.cayenne.dba.sqlserver;
import org.apache.cayenne.access.DataNode;
import org.apache.cayenne.access.trans.QualifierTranslator;
import org.apache.cayenne.access.trans.QueryAssembler;
import org.apache.cayenne.access.trans.TrimmingQualifierTranslator;
import org.apache.cayenne.dba.sybase.SybaseAdapter;
import org.apache.cayenne.map.DbAttribute;
import org.apache.cayenne.query.Query;
import org.apache.cayenne.query.SQLAction;
/**
* Cayenne DbAdapter implementation for <a
* href="http://www.microsoft.com/sql/default.asp"Microsoft SQL Server </a> engine.
* </p>
* <h3>Microsoft Driver Settings</h3>
* <p>
* Sample <a target="_top"
* href="../../../../../../../developerguide/unit-tests.html">connection settings </a> to
* use with MS SQL Server are shown below:
*
* <pre>
*
*
*
* sqlserver.cayenne.adapter = org.apache.cayenne.dba.sqlserver.SQLServerAdapter
* sqlserver.jdbc.username = test
* sqlserver.jdbc.password = secret
* sqlserver.jdbc.url = jdbc:microsoft:sqlserver://192.168.0.65;databaseName=cayenne;SelectMethod=cursor
* sqlserver.jdbc.driver = com.microsoft.jdbc.sqlserver.SQLServerDriver
* </pre>
*
* <p>
* <i>Note on case-sensitive LIKE: if your application requires case-sensitive LIKE
* support, ask your DBA to configure the database to use a case-senstitive collation (one
* with "CS" in symbolic collation name instead of "CI", e.g.
* "SQL_Latin1_general_CP1_CS_AS"). </i>
* </p>
* <h3>jTDS Driver Settings</h3>
* <p>
* jTDS is an open source driver that can be downloaded from <a href=
* "http://jtds.sourceforge.net">http://jtds.sourceforge.net </a>. It supports both
* SQLServer and Sybase. Sample SQLServer settings are the following:
* </p>
*
* <pre>
*
*
*
* sqlserver.cayenne.adapter = org.apache.cayenne.dba.sqlserver.SQLServerAdapter
* sqlserver.jdbc.username = test
* sqlserver.jdbc.password = secret
* sqlserver.jdbc.url = jdbc:jtds:sqlserver://192.168.0.65/cayenne
* sqlserver.jdbc.driver = net.sourceforge.jtds.jdbc.Driver
*
*
*
* </pre>
*
* @author Andrei Adamchik
* @since 1.1
*/
public class SQLServerAdapter extends SybaseAdapter {
public static final String TRIM_FUNCTION = "RTRIM";
public SQLServerAdapter() {
// TODO: i wonder if Sybase supports generated keys...
// in this case we need to move this to the super.
this.setSupportsGeneratedKeys(true);
}
/**
* Uses SQLServerActionBuilder to create the right action.
*
* @since 1.2
*/
public SQLAction getAction(Query query, DataNode node) {
return query.createSQLAction(new SQLServerActionBuilder(this, node.getEntityResolver()));
}
/**
* Returns a trimming translator.
*/
public QualifierTranslator getQualifierTranslator(QueryAssembler queryAssembler) {
return new TrimmingQualifierTranslator(
queryAssembler,
SQLServerAdapter.TRIM_FUNCTION);
}
/**
* Overrides super implementation to correctly set up identity columns.
*
* @since 1.2
*/
protected void createTableAppendColumn(StringBuffer sqlBuffer, DbAttribute column) {
super.createTableAppendColumn(sqlBuffer, column);
if(column.isGenerated()) {
// current limitation - we don't allow to set identity parameters...
sqlBuffer.append(" IDENTITY (1, 1)");
}
}
}