/**
 * END USER LICENSE AGREEMENT (“EULA”)
 *
 * READ THIS AGREEMENT CAREFULLY (date: 9/13/2011):
 * http://www.akiban.com/licensing/20110913
 *
 * BY INSTALLING OR USING ALL OR ANY PORTION OF THE SOFTWARE, YOU ARE ACCEPTING
 * ALL OF THE TERMS AND CONDITIONS OF THIS AGREEMENT. YOU AGREE THAT THIS
 * AGREEMENT IS ENFORCEABLE LIKE ANY WRITTEN AGREEMENT SIGNED BY YOU.
 *
 * IF YOU HAVE PAID A LICENSE FEE FOR USE OF THE SOFTWARE AND DO NOT AGREE TO
 * THESE TERMS, YOU MAY RETURN THE SOFTWARE FOR A FULL REFUND PROVIDED YOU (A) DO
 * NOT USE THE SOFTWARE AND (B) RETURN THE SOFTWARE WITHIN THIRTY (30) DAYS OF
 * YOUR INITIAL PURCHASE.
 *
 * IF YOU WISH TO USE THE SOFTWARE AS AN EMPLOYEE, CONTRACTOR, OR AGENT OF A
 * CORPORATION, PARTNERSHIP OR SIMILAR ENTITY, THEN YOU MUST BE AUTHORIZED TO SIGN
 * FOR AND BIND THE ENTITY IN ORDER TO ACCEPT THE TERMS OF THIS AGREEMENT. THE
 * LICENSES GRANTED UNDER THIS AGREEMENT ARE EXPRESSLY CONDITIONED UPON ACCEPTANCE
 * BY SUCH AUTHORIZED PERSONNEL.
 *
 * IF YOU HAVE ENTERED INTO A SEPARATE WRITTEN LICENSE AGREEMENT WITH AKIBAN FOR
 * USE OF THE SOFTWARE, THE TERMS AND CONDITIONS OF SUCH OTHER AGREEMENT SHALL
 * PREVAIL OVER ANY CONFLICTING TERMS OR CONDITIONS IN THIS AGREEMENT.
 */

package com.akiban.server.types3.common.funcs;

import com.akiban.server.types3.LazyList;
import com.akiban.server.types3.TClass;
import com.akiban.server.types3.TExecutionContext;
import com.akiban.server.types3.TOverload;
import com.akiban.server.types3.TOverloadResult;
import com.akiban.server.types3.pvalue.PValueSource;
import com.akiban.server.types3.pvalue.PValueTarget;
import com.akiban.server.types3.texpressions.TInputSetBuilder;
import com.akiban.server.types3.texpressions.TOverloadBase;

public abstract class UpperLower extends TOverloadBase
{
    public static TOverload[] create(TClass stringType)
    {
        return new TOverload[]
        {
            new UpperLower(stringType, "UPPER")
            {
                @Override
                protected void doEvaluate(TExecutionContext context, LazyList<? extends PValueSource> inputs, PValueTarget output)
                {
                    output.putObject(((String)inputs.get(0).getObject()).toUpperCase());
                }
            },
            new UpperLower(stringType, "LOWER")
            {
                @Override
                protected void doEvaluate(TExecutionContext context, LazyList<? extends PValueSource> inputs, PValueTarget output)
                {
                    output.putObject(((String)inputs.get(0).getObject()).toLowerCase());
                }
            }
        };
    }

    private final TClass stringType;
    private final String name;
    private UpperLower(TClass stringType, String name)
    {
        this.stringType = stringType;
        this.name = name;
    }
    
    @Override
    protected void buildInputSets(TInputSetBuilder builder)
    {
        builder.covers(stringType, 0);
    }

    @Override
    public String overloadName()
    {
        return name;
    }

    @Override
    public TOverloadResult resultType()
    {
        // TODO: return the actual argument's type
        return TOverloadResult.fixed(stringType.instance());
    }
}

@@ -1394,116 +1394,312 @@
 s3.T
-ExecutionContext;%0Aimport com.akiban.server.types3.TOverload;%0Aimport com.akiban.server.types3.TOverloadResult
+CustomOverloadResult;%0Aimport com.akiban.server.types3.TExecutionContext;%0Aimport com.akiban.server.types3.TInstance;%0Aimport com.akiban.server.types3.TOverload;%0Aimport com.akiban.server.types3.TOverloadResult;%0Aimport com.akiban.server.types3.TPreptimeContext;%0Aimport com.akiban.server.types3.TPreptimeValue
 ;%0Aim
@@ -1924,16 +1924,39 @@
 oadBase;
+%0Aimport java.util.List;
 %0A%0Apublic
@@ -3330,13 +3330,14 @@
  // 
-TODO:
+actual
  ret
@@ -3345,28 +3345,40 @@
 rn t
-he actual argument's
+ype is exactly the same as input
  typ
@@ -3414,35 +3414,260 @@
 ult.
-fixed(stringType.instance()
+custom(new TCustomOverloadResult()%0A        %7B%0A            @Override%0A            public TInstance resultInstance(List%3CTPreptimeValue%3E inputs, TPreptimeContext context)%0A            %7B%0A                return inputs.get(0).instance();%0A            %7D%0A        %7D
 );%0A 

change resultType()'s implementation