org.simplity.kernel.fn.Concat Maven / Gradle / Ivy
The newest version!
/*
* Copyright (c) 2016 simplity.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.simplity.kernel.fn;
import org.simplity.kernel.data.FieldsInterface;
import org.simplity.kernel.value.Value;
import org.simplity.kernel.value.ValueType;
/**
* @author simplity.org
*
*/
public class Concat extends AbstractFunction {
/**
* null as the last entry means var args..
*/
private static final ValueType[] MY_ARG_TYPES = { ValueType.TEXT, null };
/*
* (non-Javadoc)
*
* @see
* org.simplity.kernel.fn.Function#execute(org.simplity.kernel.value.Value
* [], org.simplity.kernel.data.FieldsInterface)
*/
@Override
public Value execute(Value[] arguments, FieldsInterface data) {
if (arguments == null || arguments.length == 0) {
return Value.VALUE_EMPTY;
}
StringBuilder sbf = new StringBuilder();
for (Value val : arguments) {
sbf.append(val);
}
return Value.newTextValue(sbf.toString());
}
/*
* (non-Javadoc)
*
* @see org.simplity.kernel.fn.Function#getReturnType()
*/
@Override
public ValueType getReturnType() {
return ValueType.TEXT;
}
/*
* (non-Javadoc)
*
* @see org.simplity.kernel.fn.Function#getArgDataTypes()
*/
@Override
public ValueType[] getArgDataTypes() {
return MY_ARG_TYPES;
}
}