software.amazon.awssdk.services.qldb.endpoints.internal.StringEqualsFn Maven / Gradle / Ivy

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The AWS Java SDK for QLDB module holds the client classes that are used for communicating with QLDB.

There is a newer version: 2.28.3

/*
 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with
 * the License. A copy of the License is located at
 * 
 * http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions
 * and limitations under the License.
 */

package software.amazon.awssdk.services.qldb.endpoints.internal;

import software.amazon.awssdk.annotations.SdkInternalApi;
import software.amazon.awssdk.utils.Pair;

@SdkInternalApi
public class StringEqualsFn extends Fn {
    public static final String ID = "stringEquals";

    public StringEqualsFn(FnNode fnNode) {
        super(fnNode);
    }

    @Override
    public  T acceptFnVisitor(FnVisitor visitor) {
        return visitor.visitStringEquals(this);
    }

    public static StringEqualsFn ofExprs(Expr expr, Expr of) {
        return new StringEqualsFn(FnNode.ofExprs(ID, expr, of));
    }

    public Expr getLeft() {
        return expectTwoArgs().left();
    }

    public Expr getRight() {
        return expectTwoArgs().right();
    }

    @Override
    public Value eval(Scope scope) {
        Pair args = expectTwoArgs();
        return Value.fromBool(args.left().eval(scope).expectString().equals(args.right().eval(scope).expectString()));
    }
}