com.blazebit.persistence.impl.function.base64.Base64Function Maven / Gradle / Ivy
/*
* Copyright 2014 - 2020 Blazebit.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License 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 com.blazebit.persistence.impl.function.base64;
import com.blazebit.persistence.spi.FunctionRenderContext;
import com.blazebit.persistence.spi.JpqlFunction;
/**
* @author Christian Beikov
* @since 1.5.0
*/
public class Base64Function implements JpqlFunction {
public static final String FUNCTION_NAME = "base64";
@Override
public boolean hasArguments() {
return true;
}
@Override
public boolean hasParenthesesIfNoArguments() {
return true;
}
@Override
public Class getReturnType(Class firstArgumentType) {
return String.class;
}
@Override
public void render(FunctionRenderContext context) {
if (context.getArgumentsSize() != 1) {
throw new RuntimeException("The base64 function needs one argument ! args=" + context);
}
context.addChunk(getEncodedString(context.getArgument(0)));
}
public String getEncodedString(String bytes) {
return "base64(" + bytes + ")";
}
}