|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectorg.apache.empire.db.DBObject
org.apache.empire.db.DBExpr
org.apache.empire.db.expr.set.DBSetExpr
public class DBSetExpr
This class is used for building a set expression of a SQL update statement.
There is no need to explicitly create instances of this class.
Instead use DBColumn.to(Object)
factory method.
For the SQL fragment "set name="foo"
you should write: cmd.set( TABLE.NAME.to( "foo" ));
Field Summary | |
---|---|
DBColumn |
column
|
Object |
value
|
Fields inherited from class org.apache.empire.db.DBExpr |
---|
CTX_ALIAS, CTX_ALL, CTX_DEFAULT, CTX_FULLNAME, CTX_NAME, CTX_NOPARENTHESES, CTX_VALUE |
Constructor Summary | |
---|---|
DBSetExpr(DBColumn expr,
Object value)
Constructs a new DBSetExpr object. |
Method Summary | |
---|---|
void |
addReferencedColumns(Set<DBColumn> list)
Internal function to obtain all DBColumnExpr-objects used by this expression. |
void |
addSQL(StringBuilder buf,
long context)
Creates the SQL-Command. |
DBColumn |
getColumn()
|
DBDatabase |
getDatabase()
Returns the current DBDatabase object. |
DBRowSet |
getTable()
Returns the current Table object. |
Object |
getValue()
|
void |
setValue(Object value)
The value to which to set the column |
Methods inherited from class org.apache.empire.db.DBExpr |
---|
getObjectValue, getValueClass |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
public final DBColumn column
public Object value
Constructor Detail |
---|
public DBSetExpr(DBColumn expr, Object value)
expr
- the columnvalue
- the valueMethod Detail |
---|
public DBDatabase getDatabase()
getDatabase
in class DBObject
public DBRowSet getTable()
public DBColumn getColumn()
public Object getValue()
public void setValue(Object value)
value
- the new column valuepublic void addReferencedColumns(Set<DBColumn> list)
DBExpr
addReferencedColumns
in class DBExpr
list
- list to which all used column expressions must be addedpublic void addSQL(StringBuilder buf, long context)
addSQL
in class DBExpr
buf
- the SQL-Commandcontext
- the current SQL-Command context
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |