Examples of com.foundationdb.sql.parser.StaticMethodCallNode

com.foundationdb.sql.parser.StaticMethodCallNode
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(?) }

                                          List<ParameterNode> params, int[] paramTypes)
    {
        if (!(stmt instanceof CallStatementNode))
            return null;
        CallStatementNode call = (CallStatementNode)stmt;
        StaticMethodCallNode methodCall = (StaticMethodCallNode)call.methodCall().getJavaValueNode();
        // This will signal error if undefined, so any special handling of
        // non-AIS CALL statements needs to be tested by an earlier generator.
        ServerCallInvocation invocation = ServerCallInvocation.of(server, methodCall);
        final PostgresStatement pstmt;
        switch (invocation.getCallingConvention()) {

View Full Code Here

    }


    public static Explainable explainable(PostgresServerSession server,
                                          CallStatementNode call, 
                                          List<ParameterNode> params, int[] paramTypes) {
        StaticMethodCallNode methodCall = (StaticMethodCallNode)call.methodCall().getJavaValueNode();
        ServerCallInvocation invocation = ServerCallInvocation.of(server, methodCall);
        switch (invocation.getCallingConvention()) {
        case LOADABLE_PLAN:
            return PostgresLoadablePlan.explainable(server, invocation);
        default:

View Full Code Here

    }


    public static ExecutableStatement executableStatement(CallStatementNode call,
                                                          List<ParameterNode> sqlParams,
                                                          EmbeddedQueryContext context) {
        StaticMethodCallNode methodCall = (StaticMethodCallNode)call.methodCall().getJavaValueNode();
        ServerCallInvocation invocation =
            ServerCallInvocation.of(context.getServer(), methodCall);
        return executableStatement(invocation, call, sqlParams, context);
    }

View Full Code Here

TOP

Related Classes of com.foundationdb.sql.parser.StaticMethodCallNode

com.foundationdb.sql.embedded.ExecutableCallStatement

com.foundationdb.sql.pg.PostgresCallStatementGenerator

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.