123614539d
git-svn-id: http://google-refine.googlecode.com/svn/trunk@2171 7d457c2a-affb-35e4-300a-418c747d4874
86 lines
3.1 KiB
Java
86 lines
3.1 KiB
Java
/*
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Copyright 2010, Google Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following disclaimer
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in the documentation and/or other materials provided with the
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distribution.
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* Neither the name of Google Inc. nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.google.refine.expr.functions;
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import java.text.DateFormat;
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import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.Properties;
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import org.json.JSONException;
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import org.json.JSONWriter;
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import com.google.refine.grel.Function;
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public class ToString implements Function {
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@Override
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public Object call(Properties bindings, Object[] args) {
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if (args.length >= 1) {
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Object o1 = args[0];
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if (o1 != null) {
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if (o1 instanceof Calendar || o1 instanceof Date) {
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DateFormat formatter = null;
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if (args.length == 2) {
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Object o2 = args[1];
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if (o2 != null && o2 instanceof String) {
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formatter = new SimpleDateFormat((String) o2);
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}
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}
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if (formatter == null) {
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formatter = DateFormat.getDateInstance();
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}
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return formatter.format(o1 instanceof Date ? ((Date) o1) : ((Calendar) o1).getTime());
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} else {
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return (o1 instanceof String) ? o1 : o1.toString();
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}
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}
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}
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return null;
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}
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@Override
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public void write(JSONWriter writer, Properties options)
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throws JSONException {
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writer.object();
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writer.key("description"); writer.value("Returns o converted to a string");
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writer.key("params"); writer.value("o, string format (optional)");
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writer.key("returns"); writer.value("string");
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writer.endObject();
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}
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}
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