115 lines
5.0 KiB
Java
115 lines
5.0 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.strings;
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import java.time.OffsetDateTime;
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import java.time.temporal.ChronoUnit;
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import java.util.Properties;
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import org.apache.commons.lang3.StringUtils;
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import com.google.refine.expr.EvalError;
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import com.google.refine.grel.Function;
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public class Diff 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 >= 2) {
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Object o1 = args[0];
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Object o2 = args[1];
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if (o1 != null && o2 != null) {
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if (args.length == 2 && o1 instanceof String && o2 instanceof String) {
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return StringUtils.difference((String) o1,(String) o2);
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} else if (o1 instanceof OffsetDateTime && o2 instanceof OffsetDateTime && args.length == 3) {
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Object o3 = args[2];
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if (o3 != null && o3 instanceof String) {
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String unit = ((String) o3).toLowerCase();
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OffsetDateTime c1 = (OffsetDateTime)o1;
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OffsetDateTime c2 = (OffsetDateTime)o2;
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try {
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if ("nanos".equals(unit)) {
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return ChronoUnit.NANOS.between(c2, c1);
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}
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if ("milliseconds".equals(unit)) {
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return ChronoUnit.MILLIS.between(c2, c1);
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}
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if ("seconds".equals(unit)) {
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return ChronoUnit.SECONDS.between(c2, c1);
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}
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if ("minutes".equals(unit)) {
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return ChronoUnit.MINUTES.between(c2, c1);
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}
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if ("hours".equals(unit)) {
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return ChronoUnit.HOURS.between(c2, c1);
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}
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if ("days".equals(unit)) {
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return ChronoUnit.DAYS.between(c2, c1);
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}
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if ("weeks".equals(unit)) {
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return ChronoUnit.WEEKS.between(c2, c1);
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}
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if ("months".equals(unit)) {
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return ChronoUnit.MONTHS.between(c2, c1);
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}
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if ("years".equals(unit)) {
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return ChronoUnit.YEARS.between(c2, c1);
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}
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return new EvalError("Unknown time unit " + unit);
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} catch (ArithmeticException arithmeticException) {
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return new EvalError("Number of " + unit + " between given dates causes long overflow.");
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}
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}
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}
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}
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}
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return new EvalError("Unexpected arguments - expecting either 2 strings or 2 dates and a unit string");
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}
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@Override
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public String getDescription() {
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return "For strings, returns the portion where they differ. For dates, it returns the difference in given time units";
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}
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@Override
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public String getParams() {
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return "o1, o2, time unit (optional)";
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}
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@Override
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public String getReturns() {
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return "string for strings, number for dates";
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}
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}
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