selectbypointbuffertask.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.web.tasks.query.pointbuffer;

import com.esri.adf.web.aims.data.AIMSMapFunctionality;
import com.esri.adf.web.aims.data.AIMSMapResource;
import com.esri.adf.web.data.GISResource;
import com.esri.adf.web.data.GraphicElement;
import com.esri.adf.web.data.WebContext;
import com.esri.adf.web.data.WebGraphics;
import com.esri.adf.web.data.WebLayerInfo;
import com.esri.adf.web.data.WebMap;
import com.esri.adf.web.data.geometry.WebGeometry;
import com.esri.adf.web.data.geometry.WebPoint;
import com.esri.adf.web.data.geometry.WebPolygon;
import com.esri.adf.web.data.query.IdentifyCriteria;
import com.esri.adf.web.data.query.PredefinedQueryCriteria;
import com.esri.adf.web.data.query.QueryResult;
import com.esri.adf.web.data.query.WebQuery;
import com.esri.adf.web.data.results.WebResults;
import com.esri.adf.web.data.symbol.WebSimpleMarkerSymbol;
import com.esri.adf.web.data.symbol.WebSimplePolygonSymbol;
import com.esri.adf.web.data.tasks.TaskInfo;
import com.esri.adf.web.faces.event.MapEvent;
import com.esri.adf.web.faces.event.TaskEvent;
import com.esri.adf.web.util.ADFDownloadServlet;

import com.esri.aims.mtier.model.map.layer.Layer;

import com.esri.solutions.jitk.common.agslocal.IServerContextFactory;
import com.esri.solutions.jitk.common.analysis.buffer.BufferCalculatorFactory;
import com.esri.solutions.jitk.common.analysis.buffer.IBufferCalculator;
import com.esri.solutions.jitk.common.web.layer.WebLayerInfoUtil;
import com.esri.solutions.jitk.web.data.geometry.GeomUtil;
import com.esri.solutions.jitk.web.tasks.FeatureSelectionAgsLocalTask;

import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;

import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;


/**
 * This task supports creating a buffer by selecting a point on the map view and providing a user entered distance.
 */
@SuppressWarnings({"unchecked",
    "deprecation"
})
public class SelectByPointBufferTask extends FeatureSelectionAgsLocalTask {
    private static final long serialVersionUID = 3538061927155405748L;
    private static final Logger _logger = LogManager.getLogger(SelectByPointBufferTask.class);
    private static final String POINT_BUFFER_TASK = "Point Buffer Task";
    private static final String FILL_COLOR = "255,255,0";
    private static final String POINT_COLOR = "255,0,0";
    private static final double TRANSPARENCY_FACTOR = 0.5;
    private SelectByPointBufferTaskInfo taskInfo = null;
    private String taskName = null;
    private LinkedHashMap<String, String> layerList = null;
    private LinkedHashMap<Integer, String> unitList = null;
    private String layer = null;
    private Integer unit = null;
    private String distance = "0.0";
    private String displayAttribute = "true";
    private String unitParam = null;
    private String targetLayerParam = null;
    private String distanceLabel = null;
    private String specifyPointLabel = null;
    private String errorLabel = null;
    private String findDataLabel = null;
    private String messageLabel = null;
    private String uiMessage = null;
    private String footerNote = null;
    private QueryResult currentHighlighted = null;

    public SelectByPointBufferTask() {
        super();
        setTaskInfo(new SelectByPointBufferTaskInfo());
        this.taskName = POINT_BUFFER_TASK;
        this._agsServerContextFactory = null;
    }

    public TaskInfo getTaskInfo() {
        
    	if (this._context == null) {
            taskInfo.getTaskDescriptor().setDisabled(true);
        }

        if (this.unit == null) {
            this.unit = GeomUtil.findUnit(this.unitParam);
        }

        if ((this.layer == null) && (this.targetLayerParam != null)) {
            Iterator<Map.Entry<String, String>> it = this.layerList.entrySet().iterator();

            while (it.hasNext()) {
                Map.Entry<String, String> entry = (Map.Entry<String, String>) it.next();
                String key = (String) entry.getKey();
                String value = (String) entry.getValue();

                if (value.equalsIgnoreCase(targetLayerParam)) {
                    this.layer = key;
                    break;
                }
            }
        }

        return this.taskInfo;
    }

    public void setTaskInfo(TaskInfo taskInfo) {
        this.taskInfo = (SelectByPointBufferTaskInfo) taskInfo;
        super.setTaskInfo(this.taskInfo);
    }

    public void setContext(WebContext context) {
        
    	if (context != null) {
            super.setContext(context);
            this.layerList = new LayerList(context);
        
        } else {
            taskInfo.getTaskDescriptor().setDisabled(true);
        }
    }

    public void setHighlightQueriedFeature() {}

    /**
     * Get findData label
     */
    public String getFindDataLabel() {
        return this.findDataLabel;
    }

    /**
     * Set findData label
     */
    public void setFindDataLabel(String findDataLabel) {
        this.findDataLabel = findDataLabel;
    }

    /**
     * Get message label
     */
    public String getMessageLabel() {
        return this.messageLabel;
    }

    /**
     * Set message label
     */
    public void setMessageLabel(String messageLabel) {
        this.messageLabel = messageLabel;
    }

    /**
     * Get ui message
     */
    public String getUiMessage() {
        return this.uiMessage;
    }

    /**
     * Set ui message
     */
    public void setUiMessage(String uiMessage) {
        this.uiMessage = uiMessage;
    }

    /**
     * Get footer note
     */
    public String getFooterNote() {
        return this.footerNote;
    }

    /**
     * Set footer note
     */
    public void setFooterNote(String footerNote) {
        this.footerNote = footerNote;
    }

    /**
     * Get distance label
     */
    public String getDistanceLabel() {
        return this.distanceLabel;
    }

    /**
     * Set distance label
     */
    public void setDistanceLabel(String distanceLabel) {
        this.distanceLabel = distanceLabel;
    }

    /**
     * Get specify point label
     */
    public String getSpecifyPointLabel() {
        return this.specifyPointLabel;
    }

    /**
     * Set specify point label
     */
    public void setSpecifyPointLabel(String specifyPointLabel) {
        this.specifyPointLabel = specifyPointLabel;
    }

    /**
     * Get error label
     */
    public String getErrorLabel() {
        return this.errorLabel;
    }

    /**
     * Set error label
     */
    public void setErrorLabel(String errorLabel) {
        this.errorLabel = errorLabel;
    }

    /**
     * Get task name
     */
    public String getTaskName() {
        return taskName;
    }

    /**
     * Set task name
     */
    public void setTaskName(String taskName) {
        this.taskName = taskName;
    }

    /**
     * Get selected layer for buffer query
     */
    public String getLayer() {
        return this.layer;
    }

    /**
     * Set selected layer for buffer query
     */
    public void setLayer(String layer) {
        this.layer = layer;
    }

    /**
     * Get target layer parameter
     */
    public String getTargetLayerParam() {
        return this.targetLayerParam;
    }

    /**
     * Set target layer parameter
     */
    public void setTargetLayerParam(String targetLayerParam) {