|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectorg.apache.derby.impl.sql.compile.QueryTreeNode
org.apache.derby.impl.sql.compile.ValueNode
org.apache.derby.impl.sql.compile.CurrentUserNode
The CurrentUser operator is for the builtin USER, CURRENT_USER, SESSION_USER, CURRENT SCHEMA AND IDENTITY_VAL_LOCAL() operations.
Field Summary | |
static int |
CURRENT_USER
|
static int |
IDENTITY_VAL
|
static int |
SCHEMA
|
static int |
SESSION_USER
|
static int |
SYSTEM_USER
|
static int |
USER
|
private int |
whichType
|
Fields inherited from class org.apache.derby.impl.sql.compile.ValueNode |
clause, dataTypeServices, IN_HAVING_CLAUSE, IN_SELECT_LIST, IN_UNKNOWN_CLAUSE, IN_WHERE_CLAUSE, transformed |
Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode |
AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX, beginOffset, endOffset |
Constructor Summary | |
CurrentUserNode()
|
Method Summary | |
ValueNode |
bindExpression(FromList fromList,
SubqueryList subqueryList,
java.util.Vector aggregateVector)
Binding this expression means setting the result DataTypeServices. |
void |
generateExpression(ExpressionClassBuilder acb,
MethodBuilder mb)
CurrentDatetimeOperatorNode is used in expressions. |
protected int |
getOrderableVariantType()
Return the variant type for the underlying expression. |
void |
init(java.lang.Object whichType)
Initialize a query tree node. |
java.lang.String |
toString()
Convert this object to a String. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
public static final int USER
public static final int CURRENT_USER
public static final int SESSION_USER
public static final int SYSTEM_USER
public static final int SCHEMA
public static final int IDENTITY_VAL
private int whichType
Constructor Detail |
public CurrentUserNode()
Method Detail |
public void init(java.lang.Object whichType)
QueryTreeNode
init
in class QueryTreeNode
public ValueNode bindExpression(FromList fromList, SubqueryList subqueryList, java.util.Vector aggregateVector) throws StandardException
bindExpression
in class ValueNode
fromList
- The FROM list for the statement. This parameter
is not used in this case.subqueryList
- The subquery list being built as we find
SubqueryNodes. Not used in this case.aggregateVector
- The aggregate vector being built as we find
AggregateNodes. Not used in this case.
StandardException
- Thrown on errorprotected int getOrderableVariantType()
getOrderableVariantType
in class ValueNode
public void generateExpression(ExpressionClassBuilder acb, MethodBuilder mb) throws StandardException
generateExpression
in class ValueNode
acb
- The ExpressionClassBuilder for the class being builtmb
- The method the code to place the code
StandardException
- Thrown on errorpublic java.lang.String toString()
ValueNode
toString
in class ValueNode
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |