org.apache.cayenne.access.trans
Class OrderingTranslator
java.lang.Object
org.apache.cayenne.access.trans.QueryAssemblerHelper
org.apache.cayenne.access.trans.OrderingTranslator
public class OrderingTranslator
- extends QueryAssemblerHelper
Translates query ordering to SQL.
Method Summary |
protected void |
doAppendPart()
Translates query Ordering list to SQL ORDER BY clause. |
List<String> |
getOrderByColumnList()
Returns the column expressions (not Expressions) used in the order by clause. |
Methods inherited from class org.apache.cayenne.access.trans.QueryAssemblerHelper |
appendDbPath, appendLikeEscapeCharacter, appendLiteral, appendLiteralDirect, appendObjPath, appendPart, getDbEntity, getObjEntity, paramsDbType, processColumn, processColumnWithQuoteSqlIdentifiers, processRelTermination, processRelTermination |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
orderByColumnList
protected List<String> orderByColumnList
OrderingTranslator
public OrderingTranslator(QueryAssembler queryAssembler)
doAppendPart
protected void doAppendPart()
throws IOException
- Translates query Ordering list to SQL ORDER BY clause. Ordering list is obtained
from
queryAssembler
's query object. In a process of building of
ORDER BY clause, queryAssembler
is notified when a join needs to be
added.
- Specified by:
doAppendPart
in class QueryAssemblerHelper
- Throws:
IOException
- Since:
- 3.0
getOrderByColumnList
public List<String> getOrderByColumnList()
- Returns the column expressions (not Expressions) used in the order by clause. E.g.,
in the case of an case-insensitive order by, an element of the list would be
UPPER(<column reference>)
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