com.samskivert.jdbc.depot.clause
Class UpdateClause<T extends PersistentRecord>

java.lang.Object
  com.samskivert.jdbc.depot.clause.QueryClause
      com.samskivert.jdbc.depot.clause.UpdateClause<T>

All Implemented Interfaces:

SQLExpression

public class UpdateClause<T extends PersistentRecord>
extends QueryClause

Builds actual SQL given a main persistent type and some QueryClause objects.

Field Summary

protected String[]	_fields The persistent fields to update.
protected Class<? extends PersistentRecord>	_pClass The class we're updating.
protected Object	_pojo The object from which to fetch values, or null.
protected SQLExpression[]	_values The field values, or null.
protected WhereClause	_where The where clause.

Constructor Summary

UpdateClause(Class<? extends PersistentRecord> pClass, WhereClause where, String[] fields, SQLExpression[] values)

UpdateClause(Class<? extends PersistentRecord> pClass, WhereClause where, String[] fields, T pojo)

Method Summary

void	accept(ExpressionVisitor builder) Most uses of this class have been implemented with a visitor pattern.
void	addClasses(Collection<Class<? extends PersistentRecord>> classSet) Adds all persistent classes that are brought into the SQL context by this clause: FROM clauses, JOINs, UPDATEs, anything that could create a new table abbreviation.
String[]	getFields()
Class<? extends PersistentRecord>	getPersistentClass()
Object	getPojo()
SQLExpression[]	getValues()
WhereClause	getWhereClause()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_pClass

protected Class<? extends PersistentRecord> _pClass

The class we're updating.

_where

protected WhereClause _where

The where clause.

_fields

protected String[] _fields

The persistent fields to update.

_values

protected SQLExpression[] _values

The field values, or null.

_pojo

protected Object _pojo

The object from which to fetch values, or null.

Constructor Detail

UpdateClause

public UpdateClause(Class<? extends PersistentRecord> pClass,
                    WhereClause where,
                    String[] fields,
                    T pojo)

UpdateClause

public UpdateClause(Class<? extends PersistentRecord> pClass,
                    WhereClause where,
                    String[] fields,
                    SQLExpression[] values)

Method Detail

getWhereClause

public WhereClause getWhereClause()

getFields

public String[] getFields()

getValues

public SQLExpression[] getValues()

getPojo

public Object getPojo()

getPersistentClass

public Class<? extends PersistentRecord> getPersistentClass()

addClasses

public void addClasses(Collection<Class<? extends PersistentRecord>> classSet)

Description copied from interface: SQLExpression

Adds all persistent classes that are brought into the SQL context by this clause: FROM clauses, JOINs, UPDATEs, anything that could create a new table abbreviation. This method should recurse into any subordinate state that may in turn bring in new classes so that sub-queries work correctly.

accept

public void accept(ExpressionVisitor builder)
            throws Exception

Description copied from interface: SQLExpression

Most uses of this class have been implemented with a visitor pattern. Create your own ExpressionVisitor and call this method with it.

Throws:

Exception

See Also:

SQLBuilder