org.apache.taverna.gis.GisActivityFactory.java Source code

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Here is the source code for org.apache.taverna.gis.GisActivityFactory.java

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/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 */
package org.apache.taverna.gis;

import static org.apache.taverna.gis.GisActivity.*;

import java.io.IOException;
import java.net.URI;
import java.util.HashSet;
import java.util.Set;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

import org.apache.taverna.workflowmodel.Edits;
import org.apache.taverna.workflowmodel.processor.activity.ActivityFactory;
import org.apache.taverna.workflowmodel.processor.activity.ActivityInputPort;
import org.apache.taverna.workflowmodel.processor.activity.ActivityOutputPort;

/**
 * Gis <code>ActivityFactory<code>.
 */
public class GisActivityFactory implements ActivityFactory {

    private Edits edits;

    @Override
    public GisActivity createActivity() {
        return new GisActivity();
    }

    @Override
    public URI getActivityType() {
        return URI.create(GisActivity.ACTIVITY_TYPE);
    }

    @Override
    public JsonNode getActivityConfigurationSchema() {
        ObjectMapper objectMapper = new ObjectMapper();
        try {
            return objectMapper.readTree(getClass().getResource("/schema.json"));
        } catch (IOException e) {
            return objectMapper.createObjectNode();
        }
    }

    @Override
    public Set<ActivityInputPort> getInputPorts(JsonNode configuration) {
        Set<ActivityInputPort> inputPorts = new HashSet<>();

        // FIXME: Replace with your input port definitions

        // Hard coded input port, expecting a single String
        inputPorts.add(edits.createActivityInputPort(IN_FIRST_INPUT, 0, true, null, String.class));

        // Optional ports depending on configuration
        if (configuration.get("exampleString").asText().equals("specialCase")) {
            // depth 1, ie. list of binary byte[] arrays
            inputPorts.add(edits.createActivityInputPort(IN_EXTRA_DATA, 1, true, null, byte[].class));
        }

        return inputPorts;
    }

    @Override
    public Set<ActivityOutputPort> getOutputPorts(JsonNode configuration) {
        Set<ActivityOutputPort> outputPorts = new HashSet<>();

        // FIXME: Replace with your output port definitions

        // Optional ports depending on configuration
        if (configuration.get("exampleString").asText().equals("specialCase")) {
            outputPorts.add(edits.createActivityOutputPort(OUT_REPORT, 0, 0));
        }

        // Single value output port (depth 0)
        outputPorts.add(edits.createActivityOutputPort(OUT_SIMPLE_OUTPUT, 0, 0));
        // Output port with list of values (depth 1)
        outputPorts.add(edits.createActivityOutputPort(OUT_MORE_OUTPUTS, 1, 1));

        return outputPorts;
    }

    /**
     * Sets the edits property.
     * <p>
     * This method is used by Spring. The property name must match the property specified
     * in the Spring context file.
     *
     * @param edits the <code>Edits</code> used to create input/output ports
     */
    public void setEdits(Edits edits) {
        this.edits = edits;
    }

}