org.apache.torque.sql.whereclausebuilder
Class NullValueBuilder
java.lang.Object
org.apache.torque.sql.whereclausebuilder.AbstractWhereClausePsPartBuilder
org.apache.torque.sql.whereclausebuilder.NullValueBuilder
- All Implemented Interfaces:
- WhereClausePsPartBuilder
public class NullValueBuilder
- extends AbstractWhereClausePsPartBuilder
Builds a PreparedStatementPart from a WhereClauseExpression which
rhs is null and which has one of the comparison opertator =, <>, or !=,
or which operator is SqlEnum.ISNULL or SqlEnum.ISNOTNULL
- Version:
- $Id: NullValueBuilder.java 1448414 2013-02-20 21:06:35Z tfischer $
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
NullValueBuilder
public NullValueBuilder()
buildPs
public PreparedStatementPart buildPs(WhereClauseExpression whereClausePart,
boolean ignoreCase,
Adapter adapter)
throws TorqueException
- Builds a PreparedStatementPart from a WhereClauseExpression which
rhs is null and which has one of the comparison opertator =, <>, or !=.
- Parameters:
whereClausePart
- the part of the where clause to build.
Can be modified in this method.ignoreCase
- If true and columns represent Strings, the appropriate
function defined for the database will be used to ignore
differences in case.adapter
- The adapter for the database for which the SQL
should be created, not null.
- Returns:
- the rendered SQL for the WhereClauseExpression
- Throws:
TorqueException
- when rendering fails.
isApplicable
public boolean isApplicable(WhereClauseExpression whereClauseExpression,
Adapter adapter)
- Returns whether this WhereClausePsPartBuilder is applicable for
a given WhereClauseExpression.
- Parameters:
whereClauseExpression
- the WhereClauseExpression in question.adapter
- The adapter for the database for which the SQL
should be created, not null.
- Returns:
- true if applicable, false otherwise.
Copyright © 2000-2013 The Apache Software Foundation. All Rights Reserved.