[Geoserver-users] Need help on error - The service class 'org.geotools.rawimg.GetrawImage' does not comply to one or more requirements of the JAX-RPC-1.1 specification

[Dinesh D. S. <sdi...@gm...>]

Hi,

 I am trying to develop a web service using gdaltransform utility that
fetches a particular portion of image from the entire coverage. The Java
code is being developed in eclipse IDE and successfully built by importing
necessary libraries from geotools. But when I try to create the web service
with that code, it's showing an error message '' The service class
'org.geotools.rawimg.GetrawImage' does not comply to one or more
requirements of the JAX-RPC-1.1 specification''. The code is attached
below. Please help me resolving this issue. Thanks.

------------------------- CODE -----------------------
/**
*
*/
package org.geoserver.wps.gs.rawimg;

import java.awt.Rectangle;
import java.awt.image.RenderedImage;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;

import javax.imageio.ImageIO;

import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.ExecTask;
import org.apache.tools.ant.types.Commandline;
import org.geotools.coverage.grid.GridCoverage2D;
import org.opengis.referencing.crs.CoordinateReferenceSystem;

import com.vividsolutions.jts.geom.Envelope;

/**
* @author dinesh
*
*/
public class GetrawImage {

private final static String SYSTEM_TEMP_DIR =
System.getProperty("java.io.tmpdir");

private final static int TEMP_DIR_ATTEMPTS = 5;
// Default Constructor
public GetrawImage() {
}

public RenderedImage execute(GridCoverage2D coverage,

throws IOException {

Envelope bbox,
CoordinateReferenceSystem crs)

/* Integer width,
Integer height) throws

IOException {*/
/*GeoTiffReader reader = null;
List<File> removeFiles = new ArrayList<File>();*/
//
Getting the raw dataset
// create image files

RenderedImage renderedImage = coverage.getRenderedImage();
// create temp folder
// File tempFolder = initFolder(TEMP_DIR);
File tempFolder = createTempDir();
// String filePath = System.getProperty("catalina.base") + File.separator +
"temp";
String filePath = tempFolder.getAbsolutePath();
// Create Input and output filepath
String inputFilePath = filePath + File.separator + "inputFile." + "tif";
String outputFilePath = filePath + File.separator + "outputFile."
/*
+ outputFormat.toLowerCase();
*/
+ "tif";
File inputFile = new File(inputFilePath);
File outputFile = new File(outputFilePath);
// File result = new File(filePath);
inputFile.createNewFile();
outputFile.createNewFile();
try {
/*ImageIO.write(renderedImage, inputFormat, inputFile);*/
ImageIO.write(renderedImage, "tif", inputFile);
} catch (IOException e) {
throw e;
}

// Creating the input and output text files containing user AOI to be given
as arguments to
gdaltransform
String inputAoiPath = filePath + File.separator + "inputAOI." + "txt";
String outputAoiPath = filePath + File.separator + "outputAOI." + "txt";
File inputAoi = new File(inputAoiPath);
File outputAoi = new File(outputAoiPath);
inputAoi.createNewFile();
outputAoi.createNewFile();
Writer aoiWrite = new BufferedWriter(new FileWriter(inputAoi));
try {
aoiWrite.write(bbox.getMinX() + " " + bbox.getMinY() + "\n" +
bbox.getMaxX() + " " +
bbox.getMaxY());
aoiWrite.close();
} catch (IOException e) {
throw e;
}
// Building gdaltransform command with arguments
String argument = "-i -rpc -to \"Method=RPC\"" + inputFilePath + "<" +
inputAoiPath + ">" +
outputAoiPath;
String arguments[] = new String[1];
arguments[0] = argument;
String gdalCommand = "gdaltransform " + argument;

// Execute gdaltransform command and the resulting AOI in pixel/line is
stored in outputAoi
Project project = new Project();
project.init();

ExecTask execTask = new ExecTask();
execTask.setProject(project);
Commandline command = new Commandline(gdalCommand);
// command.addArguments(arguments);
execTask.setCommand(command);
execTask.execute();

inputAoi.delete();
// Delete inputAoi file
// Extract the user AOI in the image using information from outputAoi
BufferedReader aoiRead = new BufferedReader(new FileReader(outputAoi));
String str;
int coordinates[] = new int[4];
int i = 0;
int index;
try {
while ((str = aoiRead.readLine()) != null) {
index = str.indexOf(' ');
coordinates[i] = (int) Float.valueOf(str.substring(0,
index-1)).floatValue();
coordinates
coordinates[i+1] = (int) Float.valueOf(str.substring(index+1)).floatValue();
coordinates
i++;
}
aoiRead.close();
} catch (IOException e) {
throw e;
}
outputAoi.delete();
//Delete outputAoi file
int width = Math.abs(coordinates[0]-coordinates[2]);// Pixel


int height = Math.abs(coordinates[1]-coordinates[3]);// Line

RenderedImage result = (RenderedImage) renderedImage.getData(new
Rectangle(coordinates[0],coordinates[1],width,height));
return result;
}

/**
* Create temporary directory
*/
public static File createTempDir() {
File baseDir = new File(SYSTEM_TEMP_DIR);
String baseName = System.currentTimeMillis() + "-";

for (int counter = 0; counter < TEMP_DIR_ATTEMPTS; counter++) {
File tempDir = new File(baseDir, baseName + counter);
if (tempDir.mkdir()) {
return tempDir;
}

}
throw new IllegalStateException("Failed to create directory within " +
TEMP_DIR_ATTEMPTS
+ " attempts (tried " + baseName + "0 to " + baseName + (TEMP_DIR_ATTEMPTS
- 1)
+ ')');

}

}



-- 
Regards,
S.Dinesh Dass,
M.Tech - Remote Sensing,
Institute of Remote Sensing,
Anna University,
Chennai.
Mob: +91-9976033932