96 lines
4.1 KiB
Java
96 lines
4.1 KiB
Java
/**
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* Copyright (C) 2007 - 2016 52°North Initiative for Geospatial Open Source
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* Software GmbH
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.n52.wps.server;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import org.n52.wps.io.data.IData;
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import org.n52.wps.algorithm.descriptor.AlgorithmDescriptor;
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import org.n52.wps.algorithm.descriptor.LiteralDataInputDescriptor;
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import org.n52.wps.algorithm.descriptor.LiteralDataOutputDescriptor;
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import org.n52.wps.io.data.binding.literal.LiteralStringBinding;
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/**
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*
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* @author tkunicki
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*/
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public class StringReverseSelfDescribingAlgorithm extends AbstractDescriptorAlgorithm {
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public final static String INPUT_STRING = "INPUT_STRING";
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public final static String OUTPUT_STRING = "OUTPUT_STRING";
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private static AlgorithmDescriptor DESCRIPTOR;
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protected synchronized static AlgorithmDescriptor getAlgorithmDescriptorStatic() {
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if (DESCRIPTOR == null) {
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DESCRIPTOR =
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// passing in a class to the AlgorithmDescriptor.builder will set
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// set the identity to the the fully qualified class name. If this
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// is not desired use the String constructor.
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AlgorithmDescriptor.builder(StringReverseSelfDescribingAlgorithm.class).
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version("0.0.1"). // default is "1.0.0"
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title("String Reverse Algorithm (Self Describing)"). // identifier is used if title is not set
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abstrakt("This is an example algorithm implementation described using a chained builder that reverses a string."). // default is null (not output)
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statusSupported(false). // default is true
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storeSupported(false). // default is true
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addInputDescriptor(
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LiteralDataInputDescriptor.stringBuilder(INPUT_STRING).
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title("Input String"). // identifier is used if title is not set
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abstrakt("The input string you want reversed.").// defaults to null (not output)
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minOccurs(1). // defaults to 1
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maxOccurs(1)). // defaults to 1
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addOutputDescriptor(
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LiteralDataOutputDescriptor.stringBuilder(OUTPUT_STRING).
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title("Output String"). // identifier is used if title is not set
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abstrakt("The reverse of the input string.")). // defaults to null (not output).
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build();
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}
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return DESCRIPTOR;
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}
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@Override
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public AlgorithmDescriptor createAlgorithmDescriptor() {
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return getAlgorithmDescriptorStatic();
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}
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@Override
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public Map<String, IData> run(Map<String, List<IData>> inputMap) {
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// unwrap input(s)
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List<IData> inputDataList = inputMap.get(INPUT_STRING);
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if (inputDataList == null || inputDataList.isEmpty()) {
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addError("Missing input string!");
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return null;
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}
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IData inputData = inputDataList.get(0);
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if (inputData == null || !(inputData instanceof LiteralStringBinding)) {
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addError("Something wierd happened with the request parser!");
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return null;
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}
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String inputString = ((LiteralStringBinding)inputData).getPayload();
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// do work
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String outputString = (new StringBuffer(inputString)).reverse().toString();
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// wrap output
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Map<String, IData> outputMap = new HashMap<String, IData>();
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outputMap.put(OUTPUT_STRING, new LiteralStringBinding(outputString));
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return outputMap;
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}
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}
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