edittablepanel.java

eq跨平台查询工具源码 eq跨平台查询工具源码

/*
 * EditTablePanel.java
 *
 * Copyright (C) 2002, 2003, 2004, 2005, 2006 Takis Diakoumis
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */


package org.executequery.gui.table;


import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.sql.SQLException;
import java.util.Enumeration;
import java.util.Hashtable;
import javax.swing.DefaultCellEditor;

import javax.swing.JOptionPane;

import org.executequery.databasemediators.QuerySender;
import org.executequery.GUIUtilities;
import org.executequery.databasemediators.SqlStatementResult;
import org.executequery.gui.browser.ColumnData;
import org.underworldlabs.swing.GUIUtils;
import org.underworldlabs.util.MiscUtils;

/* ----------------------------------------------------------
 * CVS NOTE: Changes to the CVS repository prior to the 
 *           release of version 3.0.0beta1 has meant a 
 *           resetting of CVS revision numbers.
 * ----------------------------------------------------------
 */

/**
 *
 * @author   Takis Diakoumis
 * @version  $Revision: 1.5 $
 * @date     $Date: 2006/06/09 01:44:37 $
 */
public class EditTablePanel extends TableDefinitionPanel {
    
    /** The table creator object - parent to this */
    private TableModifier creator;
    
    /** The buffer off all SQL generated */
    private StringBuffer sqlText;
    
    /** Holds temporary SQL text during modifications */
    private Hashtable tempSqlText;
    
    /** The column descriptions for the current selection before modifications */
    private ColumnData[] originalData;
    
    /** The string literal 'ALTER TABLE ' */
    private static String DROP_COLUMN_1 = "ALTER TABLE ";
    
    /** The string literal ' DROP COLUMN ' */
    private static String DROP_COLUMN_2 = " DROP COLUMN ";
    
    //------------------------------------------------
    // The following are reuseable String constants
    // used in the SQL text pane when making table
    // or other schema modifications.
    //------------------------------------------------
    
    /** The String literal 'ALTER TABLE ' */
    private static final String ALTER_TABLE = "ALTER TABLE ";
    /** The String literal ' MODIFY (' */
    private static final String MODIFY = " MODIFY (";
    /** The String literal ' NOT NULL' */
    private static final String NOT_NULL = " NOT NULL";
    /** The String literal ' NULL' */
    private static final String NULL = " NULL";
    /** The String literal ' ADD ' */
    private static final String ADD = " ADD ";

    /** The String literal ' DROP ' */
    private static final String DROP = " DROP ";

    /** The String literal ')' */
    private static final String CLOSE_B = ")";
    /** The character literal '(' */
    private static final char OPEN_B = '(';
    /** The String literal ' RENAME COLUMN ' */
    private static final String RENAME_COLUMN = " RENAME COLUMN ";
    /** The String literal ' TO ' */
    private static final String TO = " TO ";
    /** The character literal ',' */
    private static final char COMMA = ',';
    /** The character literal '.' */
    private static final char DOT = '.';
    /** The character literal ' ' */
    private static final char SPACE = ' ';
    /** An empty String literal */
    private static final String EMPTY = "";
    /** A semi-colon followed by a carriage return ';\n' */
    private static final String NEW_LINE = ";\n";
    
    public EditTablePanel(TableModifier creator) {
        super();
        this.creator = creator;
        
        sqlText = new StringBuffer(100);
        tempSqlText = new Hashtable();
        getTable().addMouseListener(new MouseHandler());
    }
    
    public String getSQLText() {
        generateSQL();
        return sqlText.toString();
    }
    
    public void setOriginalData(ColumnData[] cda) {
        originalData = cda;
    }
    
    /*
    public void setColumnDataArray(ColumnData[] cda) {
        _model.setColumnDataArray(cda);
    }
    */

    /** <p>Sets the SQL changes <code>Hashtable</code> to
     *  an existing one as the value passed.
     *
     *  @param the SQL changes within a <code>Hashtable</code>
     */
    public void setSQLChangesHash(Hashtable tempSqlText) {        
        if (tempSqlText != null) {
            this.tempSqlText = tempSqlText;
        }
    }
    
    /** <p>Returns the SQL changes within a <code>Hashtable</code>.
     *
     *  @return the SQL changes
     */
    public Hashtable getSQLChangesHash() {
        return tempSqlText;
    }

    public void setOriginalData() {
        
        GUIUtils.startWorker(new Runnable() {
        //SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                
                int v_size = tableVector.size();
                originalData = new ColumnData[v_size];
                
                for (int i = 0; i <v_size; i++) {
                    originalData[i] = new ColumnData();
                    originalData[i].setValues(tableVector.elementAt(i));
                }
                
            }
        });
        
    }
    
    /** <p>Drops the currently selected column (table row)
     *  from the database table and applies this change
     *  to the database.
     *
     *  @param the <code>QuerySender</code> to perform the
     *         operation on the database.
     */
    public void deleteRow(QuerySender qs) {
        int row = getSelectedRow();
        if (row == -1) {
            return;
        }
        
        tableEditingStopped(null);        
        if (isEditing()) {
            removeEditor();
        }
        
        ColumnData cd = tableVector.elementAt(row);
        
        int newEditingRow = row == tableVector.size() - 1 ? row - 1 : row;
        setEditingRow(newEditingRow);
        
        if (cd.isNewColumn()) {
            tableVector.removeElementAt(row);
            _model.fireTableRowsDeleted(row, row);
            tempSqlText.remove(ADD + row);
            addColumnLines(-1);
            return;
        }
        
        int yesNo = GUIUtilities.displayConfirmDialog(
                                "Are you sure you want to remove\n" +
                                "the column " + cd.getColumnName() + "?");
        
        if (yesNo == JOptionPane.NO_OPTION || yesNo == JOptionPane.CANCEL_OPTION) {
            return;
        }
        else if (yesNo == JOptionPane.YES_OPTION) {
            
            try {
                SqlStatementResult result = qs.updateRecords(
                        DROP_COLUMN_1 + creator.getTableName() +
                        DROP_COLUMN_2 + cd.getColumnName());
                
                if (result.getUpdateCount() >= 0) {
                    tableVector.removeElementAt(row);
                    _model.fireTableRowsDeleted(row, row);
                }
                
                else {
                    SQLException e = result.getSqlException();
                    if (e != null) {
                        StringBuffer sb = new StringBuffer();
                        sb.append("An error occurred applying the specified changes.").
                           append("\n\nThe system returned:\n").
                           append(MiscUtils.formatSQLError(e));
                        GUIUtilities.displayExceptionErrorDialog(sb.toString(), e);
                    } 
                    else {
                        GUIUtilities.displayErrorMessage(result.getErrorMessage());
                    }
                }
                
            } catch (Exception e) {
                e.printStackTrace();
                StringBuffer sb = new StringBuffer();
                sb.append("An error occurred applying the specified changes.").
                   append("\n\nThe system returned:\n").
                   append(e.getMessage());
                GUIUtilities.displayExceptionErrorDialog(sb.toString(), e);
            }
            
        }
        
    }

    /** 
     * <p>Inserts a new column after the selected
     * column moving the selected column up one row. 
     * 
     * Overrides to mark the column as new.
     */
    public void insertAfter() {
        fireEditingStopped();

        int selection = getSelectedRow();
        if (selection == -1) {
            return;
        }

        int newRow = selection + 1;
        ColumnData cd = new ColumnData(true);
        cd.setColumnRequired(ColumnData.VALUE_NOT_REQUIRED);

        if (selection == tableVector.size()) {
            tableVector.add(cd);
        }
        else {
            tableVector.add(newRow, cd);
        }
        
        _model.fireTableRowsInserted(selection, newRow);        
        setRowSelectionInterval(newRow);
        setColumnSelectionInterval(1);