org.hibernate.sql.ANSICaseFragment Maven / Gradle / Ivy
//$Id: ANSICaseFragment.java 4851 2004-12-02 05:09:49Z oneovthafew $
package org.hibernate.sql;
import java.util.Iterator;
import java.util.Map;
/**
An ANSI SQL CASE expression.
case when ... then ... end as ...
@author Gavin King, Simon Harris
*/
public class ANSICaseFragment extends CaseFragment {
public String toFragmentString() {
StringBuffer buf = new StringBuffer( cases.size() * 15 + 10 )
.append("case");
Iterator iter = cases.entrySet().iterator();
while ( iter.hasNext() ) {
Map.Entry me = (Map.Entry) iter.next();
buf.append(" when ")
.append( me.getKey() )
.append(" is not null then ")
.append( me.getValue() );
}
buf.append(" end");
if (returnColumnName!=null) {
buf.append(" as ")
.append(returnColumnName);
}
return buf.toString();
}
}