com.foundationdb.sql.parser

Class StaticMethodCallNode

java.lang.Object

com.foundationdb.sql.parser.QueryTreeNode

com.foundationdb.sql.parser.JavaValueNode

com.foundationdb.sql.parser.MethodCallNode

com.foundationdb.sql.parser.StaticMethodCallNode

All Implemented Interfaces:

Visitable

public class StaticMethodCallNode
extends MethodCallNode

A StaticMethodCallNode represents a static method call from a Class (as opposed to from an Object). For a procedure the call requires that the arguments be ? parameters. The parameter is *logically* passed into the method call a number of different ways.

For a application call like CALL MYPROC(?) the logically Java method call is (in psuedo Java/SQL code) (examples with CHAR(10) parameter)
Fixed length IN parameters - com.acme.MyProcedureMethod(?)
Variable length IN parameters - com.acme.MyProcedureMethod(CAST (? AS CHAR(10))
Fixed length INOUT parameter - String[] holder = new String[] {?}; com.acme.MyProcedureMethod(holder); ? = holder[0]
Variable length INOUT parameter - String[] holder = new String[] {CAST (? AS CHAR(10)}; com.acme.MyProcedureMethod(holder); ? = CAST (holder[0] AS CHAR(10))
Fixed length OUT parameter - String[] holder = new String[1]; com.acme.MyProcedureMethod(holder); ? = holder[0]
Variable length INOUT parameter - String[] holder = new String[1]; com.acme.MyProcedureMethod(holder); ? = CAST (holder[0] AS CHAR(10))

For static method calls there is no pre-definition of an IN or INOUT parameter, so a call to CallableStatement.registerOutParameter() makes the parameter an INOUT parameter, provided: - the parameter is passed directly to the method call (no casts or expressions). - the method's parameter type is a Java array type. Since this is a dynmaic decision we compile in code to take both paths, based upon a boolean isINOUT which is dervied from the ParameterValueSet. Code is logically (only single parameter String[] shown here). Note, no casts can exist here. boolean isINOUT = getParameterValueSet().getParameterMode(0) == PARAMETER_IN_OUT; if (isINOUT) { String[] holder = new String[] {?}; com.acme.MyProcedureMethod(holder); ? = holder[0] } else { com.acme.MyProcedureMethod(?) }

Field Summary

Fields inherited from class com.foundationdb.sql.parser.MethodCallNode

javaClassName, methodName, methodParms

Fields inherited from class com.foundationdb.sql.parser.JavaValueNode

forCallStatement, jsqlType

Fields inherited from class com.foundationdb.sql.parser.QueryTreeNode

AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX

Constructor Summary

Constructors

Constructor and Description
StaticMethodCallNode()

Method Summary

Methods

Modifier and Type	Method and Description
void	copyFrom(QueryTreeNode node) Fill this node with a deep copy of the given node.
TableName	getProcedureName()
void	init(Object methodName, Object javaClassName) Intializer for a NonStaticMethodCallNode
String	toString() Convert this object to a String.

Methods inherited from class com.foundationdb.sql.parser.MethodCallNode

addParms, getJavaClassName, getMethodName, getMethodParameters, init, printSubNodes, setJavaClassName

Methods inherited from class com.foundationdb.sql.parser.JavaValueNode

castToPrimitive, getJavaTypeName, getJSQLType, getPrimitiveTypeName, getType, isPrimitiveType, mapToTypeID, markForCallStatement, markReturnValueDiscarded, mustCastToPrimitive, returnValueDiscarded, returnValueToSQLDomain, setJavaTypeName, valueReturnedToSQLDomain

Methods inherited from class com.foundationdb.sql.parser.QueryTreeNode

accept, convertDefaultNode, debugFlush, debugPrint, formatNodeString, getBeginOffset, getDebugOutput, getEndOffset, getNodeFactory, getNodeType, getNullNode, getParserContext, getStatementType, getUserData, init, init, init, init, init, init, init, init, init, init, init, init, isInstanceOf, makeTableName, makeTableName, nodeHeader, printLabel, setBeginOffset, setDebugOutput, setEndOffset, setNodeType, setParserContext, setUserData, stackPrint, treePrint, treePrint, treePrint

Methods inherited from class java.lang.Object

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

Constructor Detail

StaticMethodCallNode

public StaticMethodCallNode()

Method Detail

init

public void init(Object methodName,
        Object javaClassName)

Intializer for a NonStaticMethodCallNode

Overrides:

init in class QueryTreeNode

Parameters:

methodName - The name of the method to call

javaClassName - The name of the java class that the static method belongs to.

getProcedureName

public TableName getProcedureName()

copyFrom

public void copyFrom(QueryTreeNode node)
              throws StandardException

Fill this node with a deep copy of the given node.

Overrides:

copyFrom in class MethodCallNode

Throws:

StandardException

toString

public String toString()

Convert this object to a String. See comments in QueryTreeNode.java for how this should be done for tree printing.

Overrides:

toString in class MethodCallNode

Returns:

This object as a String