oracle.toplink.essentials.queryframework.ColumnResult Maven / Gradle / Ivy
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package oracle.toplink.essentials.queryframework;
import oracle.toplink.essentials.internal.localization.ExceptionLocalization;
import oracle.toplink.essentials.sessions.DatabaseRecord;
/**
* Purpose:
* Concrete class to represent the ColumnResult structure as defined by
* the EJB 3.0 Persistence specification. This class is a subcompent of the
* EntityResult
*
* @see EntityResult
* @author Gordon Yorke
* @since TopLink Java Essentials
*/
public class ColumnResult extends SQLResult{
/** Stores the Columns name from the result set */
protected String columnName;
public ColumnResult(String column){
this.columnName = column;
if (this.columnName == null){
throw new IllegalArgumentException(ExceptionLocalization.buildMessage("null_value_for_column_result"));
}
}
public String getColumnName(){
return this.columnName;
}
/**
* INTERNAL:
* This method is a convience method for extracting values from Results
*/
public Object getValueFromRecord(DatabaseRecord record, ResultSetMappingQuery query){
return record.get(this.columnName);
}
public boolean isColumnResult(){
return true;
}
}