/**
* Copyright (C) 2010-2017 Structr GmbH
*
* This file is part of Structr <http://structr.org>.
*
* Structr is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* Structr is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Structr. If not, see <http://www.gnu.org/licenses/>.
*/
package org.structr.core.function;
import org.structr.common.error.FrameworkException;
import org.structr.schema.action.ActionContext;
import org.structr.schema.action.Function;
/**
*
*/
public class AddFunction extends Function<Object, Object> {
public static final String ERROR_MESSAGE_ADD = "Usage: ${add(values...)}. Example: ${add(1, 2, 3, this.children.size)}";
@Override
public String getName() {
return "add()";
}
@Override
public Object apply(final ActionContext ctx, final Object caller, final Object[] sources) throws FrameworkException {
Double result = 0.0;
if (sources != null) {
for (Object i : sources) {
if (i != null) {
try {
result += Double.parseDouble(i.toString());
} catch (Throwable t) {
logException(caller, t, sources);
return t.getMessage();
}
}
}
}
return result;
}
@Override
public String usage(boolean inJavaScriptContext) {
return ERROR_MESSAGE_ADD;
}
@Override
public String shortDescription() {
return "Returns the sum of the given arguments";
}
}