svn-gvsig-desktop / trunk / applications / appgvSIG / src / com / iver / cit / gvsig / TableNumericFieldOperations.java @ 28940
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package com.iver.cit.gvsig; |
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import java.math.BigDecimal; |
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import java.sql.Types; |
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import java.util.BitSet; |
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import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
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import com.iver.andami.PluginServices; |
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import com.iver.andami.messages.NotificationManager; |
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import com.iver.andami.plugins.Extension; |
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import com.iver.andami.ui.mdiManager.IWindow; |
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import com.iver.cit.gvsig.fmap.layers.SelectableDataSource; |
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import com.iver.cit.gvsig.fmap.selection.SelectionFieldIterator; |
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import com.iver.cit.gvsig.project.documents.table.Statistics.NonNumericFieldException; |
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import com.iver.cit.gvsig.project.documents.table.gui.Statistics; |
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import com.iver.cit.gvsig.project.documents.table.gui.Table; |
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/**
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* @author Fernando Gonz?lez Cort?s
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*/
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public class TableNumericFieldOperations extends Extension{ |
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/**
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* @see com.iver.andami.plugins.IExtension#initialize()
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*/
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public void initialize() { |
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registerIcons(); |
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} |
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private void registerIcons(){ |
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PluginServices.getIconTheme().registerDefault( |
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"table-statistics",
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this.getClass().getClassLoader().getResource("images/statistics.png") |
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); |
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} |
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/**
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* @see com.iver.andami.plugins.IExtension#execute(java.lang.String)
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*/
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public void execute(String actionCommand) { |
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IWindow v = PluginServices.getMDIManager().getActiveWindow(); |
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if (v != null) { |
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if (v.getClass() == Table.class) {
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Table table = (Table) v; |
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doExecute(table); |
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} |
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} |
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} |
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/**
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* "execute" method acction
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* @param actionCommand
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* The acction command that executes this method
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* @param table
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* Table to operate
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*/
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protected void doExecute(Table table){ |
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int fieldIndex = table.getSelectedFieldIndices().nextSetBit(0); |
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try {
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SelectableDataSource ds = table.getModel().getModelo().getRecordset(); |
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BitSet selectedRows = (BitSet)ds.getSelection().clone(); |
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// If selection is empty, calculate on the full datasource
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if (selectedRows.cardinality() == 0){ |
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selectedRows.set(0, (int) ds.getRowCount()); |
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} |
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SelectionFieldIterator iterator = new SelectionFieldIterator(ds, selectedRows, fieldIndex);
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com.iver.cit.gvsig.project.documents.table.Statistics statsCalculator = new com.iver.cit.gvsig.project.documents.table.Statistics(iterator);
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BigDecimal sum = statsCalculator.sum();
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BigDecimal min = statsCalculator.min();
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BigDecimal max = statsCalculator.max();
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BigDecimal mean = statsCalculator.mean();
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BigDecimal variance = statsCalculator.variance();
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BigDecimal stdDeviation = statsCalculator.stdDeviation();
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Statistics st = new Statistics();
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st.setStatistics(mean.doubleValue(), |
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max.doubleValue(), |
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min.doubleValue(), |
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variance.doubleValue(), |
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stdDeviation.doubleValue(), |
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(int) statsCalculator.count(),
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new BigDecimal(max.doubleValue()).subtract(min).doubleValue(), |
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sum.doubleValue()); |
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PluginServices.getMDIManager().addWindow(st); |
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} catch (ReadDriverException e) {
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NotificationManager.showMessageError( |
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PluginServices.getText(this, "Statistics__Error_accessing_the_data"), e); |
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} catch (NonNumericFieldException e) {
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NotificationManager.showMessageError("Statistics__Selected_field_is_not_numeric", e);
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} |
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} |
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/**
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* @see com.iver.andami.plugins.IExtension#isEnabled()
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*/
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public boolean isEnabled() { |
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IWindow v = PluginServices.getMDIManager().getActiveWindow(); |
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if (v == null) { |
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return false; |
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} |
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if (v instanceof Table) { |
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Table table = (Table) v; |
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return doIsEnabled(table);
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} |
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return false; |
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} |
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protected boolean doIsEnabled(Table table){ |
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BitSet indices = table.getSelectedFieldIndices();
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// System.out.println("TableNumericFieldOperations.isEnabled: Tabla: " + table.getModel().getModelo().getRecordset().getName() );
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if (indices.cardinality() == 1){ |
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try {
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int index=indices.nextSetBit(0); |
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if (table.getModel().getModelo().getRecordset().getFieldCount()<index+1) |
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return false; |
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int type = table.getModel().getModelo().getRecordset().getFieldType(index);
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if ((type == Types.BIGINT) || |
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(type == Types.DECIMAL) ||
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(type == Types.DOUBLE) ||
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(type == Types.FLOAT) ||
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(type == Types.INTEGER) ||
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(type == Types.SMALLINT) ||
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(type == Types.TINYINT) ||
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(type == Types.REAL) ||
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(type == Types.NUMERIC)){
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return true; |
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} |
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} catch (ReadDriverException e) {
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return false; |
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} |
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} |
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return false; |
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} |
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/**
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* @see com.iver.andami.plugins.IExtension#isVisible()
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*/
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public boolean isVisible() { |
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IWindow v = PluginServices.getMDIManager().getActiveWindow(); |
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if (v == null) { |
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return false; |
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} |
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if (v instanceof Table) { |
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return true; |
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} |
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return false; |
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} |
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} |