gvsig-raster / org.gvsig.raster / trunk / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.impl / src / main / java / org / gvsig / raster / impl / store / properties / RemoteDataStoreStatistics.java @ 1419
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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package org.gvsig.raster.impl.store.properties; |
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import org.gvsig.fmap.dal.coverage.dataset.Buffer; |
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import org.gvsig.fmap.dal.coverage.exception.FileNotOpenException; |
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import org.gvsig.fmap.dal.coverage.exception.ProcessInterruptedException; |
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import org.gvsig.fmap.dal.coverage.exception.RasterDriverException; |
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import org.gvsig.fmap.dal.coverage.exception.RmfSerializerException; |
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import org.gvsig.raster.impl.process.RasterTask; |
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import org.gvsig.raster.impl.process.RasterTaskQueue; |
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import org.gvsig.raster.impl.provider.RasterProvider; |
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import org.gvsig.raster.impl.provider.RemoteRasterProvider; |
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/**
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* Statistics for a remote raster provider.
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class RemoteDataStoreStatistics extends SimpleProviderStatistics { |
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/**
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* Constructor. Asigna el fichero asociado.
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*/
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public RemoteDataStoreStatistics(RasterProvider prov) {
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super(prov);
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.impl.store.properties.SimpleProviderStatistics#calculate(double)
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*/
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public void calculate(double scale) throws FileNotOpenException, RasterDriverException, ProcessInterruptedException { |
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if (provider == null || !(provider instanceof RemoteRasterProvider)) |
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return;
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RemoteRasterProvider prov = (RemoteRasterProvider)provider; |
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RasterTask task = RasterTaskQueue.get(Thread.currentThread().getId() + ""); |
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percent = 0;
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bandCount = provider.getBandCount(); |
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max = new double[bandCount]; |
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min = new double[bandCount]; |
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secondMax = new double[bandCount]; |
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secondMin = new double[bandCount]; |
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maxByteUnsigned = new double[bandCount]; |
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minByteUnsigned = new double[bandCount]; |
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secondMaxByteUnsigned = new double[bandCount]; |
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secondMinByteUnsigned = new double[bandCount]; |
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mean = new double[bandCount]; |
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variance = new double[bandCount]; |
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long[] iValues = new long[bandCount]; |
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boolean[] initializedBand = new boolean[bandCount]; |
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int[] type = new int[bandCount]; |
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double z = 0; |
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double rgb = 0; |
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for (int iBand = 0; iBand < bandCount; iBand++) { |
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max[iBand] = Double.NEGATIVE_INFINITY;
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min[iBand] = Double.POSITIVE_INFINITY;
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secondMax[iBand] = Double.NEGATIVE_INFINITY;
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secondMin[iBand] = Double.POSITIVE_INFINITY;
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maxByteUnsigned[iBand] = 0;
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minByteUnsigned[iBand] = 255;
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secondMaxByteUnsigned[iBand] = 0;
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secondMinByteUnsigned[iBand] = 255;
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initializedBand[iBand] = false;
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type[iBand] = provider.getDataType()[iBand]; |
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} |
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Buffer buf = prov.getBufferLastRequest();
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if(buf == null) |
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return;
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for (int iBand = 0; iBand < buf.getBandCount(); iBand++) { |
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for (int col = 0; col < buf.getWidth(); col++) { |
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for (int row = 0; row < buf.getHeight(); row++) { |
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z = (buf.getDataType() == Buffer.TYPE_BYTE) ? buf.getElemByte(row, col, iBand) :
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(buf.getDataType() == Buffer.TYPE_SHORT) ? buf.getElemShort(row, col, iBand) :
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(buf.getDataType() == Buffer.TYPE_DOUBLE) ? buf.getElemDouble(row, col, iBand) :
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(buf.getDataType() == Buffer.TYPE_FLOAT) ? buf.getElemFloat(row, col, iBand) :
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(buf.getDataType() == Buffer.TYPE_INT) ? buf.getElemInt(row, col, iBand) :
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0;
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if ((provider.getNoDataValue().isDefined()) &&
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(z == provider.getNoDataValue().getValue().doubleValue())) |
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continue;
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if (Double.isNaN(z)) |
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continue;
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rgb = 0;
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if(buf.getDataType() == Buffer.TYPE_BYTE) { |
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rgb = ((byte) z) & 0xff; |
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mean[iBand] += rgb; |
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variance[iBand] += rgb * rgb; |
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} else {
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//rgb = (b != null) ? ((byte) z) & 0xff : 0;
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mean[iBand] += z; |
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variance[iBand] += z * z; |
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} |
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iValues[iBand]++; |
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if (!initializedBand[iBand]) {
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secondMin[iBand] = min[iBand]; |
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secondMax[iBand] = max[iBand]; |
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min[iBand] = z; |
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max[iBand] = z; |
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secondMinByteUnsigned[iBand] = minByteUnsigned[iBand]; |
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secondMaxByteUnsigned[iBand] = maxByteUnsigned[iBand]; |
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minByteUnsigned[iBand] = rgb; |
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maxByteUnsigned[iBand] = rgb; |
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initializedBand[iBand] = true;
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continue;
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} |
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if (z < secondMin[iBand]) {
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if (z < min[iBand]) {
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secondMin[iBand] = min[iBand]; |
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min[iBand] = z; |
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} else {
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if (z > min[iBand])
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secondMin[iBand] = z; |
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} |
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} |
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if (z > secondMax[iBand]) {
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if (z > max[iBand]) {
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secondMax[iBand] = max[iBand]; |
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max[iBand] = z; |
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} else {
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if (z < max[iBand])
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secondMax[iBand] = z; |
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} |
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} |
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if (rgb < secondMinByteUnsigned[iBand]) {
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if (rgb < minByteUnsigned[iBand]) {
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secondMinByteUnsigned[iBand] = minByteUnsigned[iBand]; |
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minByteUnsigned[iBand] = rgb; |
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} else {
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if (rgb > minByteUnsigned[iBand])
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secondMinByteUnsigned[iBand] = rgb; |
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} |
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} |
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if (rgb > secondMaxByteUnsigned[iBand]) {
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if (rgb > maxByteUnsigned[iBand]) {
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secondMaxByteUnsigned[iBand] = maxByteUnsigned[iBand]; |
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maxByteUnsigned[iBand] = rgb; |
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} else {
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if (rgb < maxByteUnsigned[iBand])
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secondMaxByteUnsigned[iBand] = rgb; |
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} |
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} |
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} |
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} |
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if (task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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percent = ((bandCount * 100) / (int)buf.getBandCount()); |
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} |
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percent = 100;
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for (int iBand = 0; iBand < bandCount; iBand++) { |
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if (iValues[iBand] > 0) { |
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mean[iBand] = mean[iBand] / (double) iValues[iBand];
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variance[iBand] = variance[iBand] / (double) iValues[iBand] - mean[iBand] * mean[iBand];
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} |
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} |
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calculated = true;
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forceToRecalc = false;
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try {
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provider.saveObjectToRmf(RemoteDataStoreStatistics.class, this);
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} catch (RmfSerializerException e) {
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// No salva a rmf
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} |
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} |
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} |