archive/net.sourceforge.phpeclipse.quantum.sql/src/com/quantum/wizards/DeleteRowPage.java

   1 package com.quantum.wizards;
   2
   3 import org.eclipse.swt.SWT;
   4 import org.eclipse.swt.events.ModifyEvent;
   5 import org.eclipse.swt.events.ModifyListener;
   6 import org.eclipse.swt.events.SelectionEvent;
   7 import org.eclipse.swt.events.SelectionListener;
   8 import org.eclipse.swt.layout.GridData;
   9 import org.eclipse.swt.layout.GridLayout;
  10 import org.eclipse.swt.widgets.Button;
  11 import org.eclipse.swt.widgets.Composite;
  12 import org.eclipse.swt.widgets.Label;
  13 import org.eclipse.swt.widgets.Text;
  14
  15 import com.quantum.Messages;
  16 import com.quantum.adapters.DatabaseAdapter;
  17 import com.quantum.model.Bookmark;
  18 import com.quantum.model.Column;
  19 import com.quantum.model.Entity;
  20
  21 public class DeleteRowPage extends BaseSQLPage implements SQLPage {
  22         String[] columnNames;
  23         Text[] values;
  24         Button[] whereValues;
  25         Text query;
  26
  27         public DeleteRowPage(String pageName) {
  28                 super(pageName);
  29         }
  30
  31         public void createControl(Composite parent) {
  32                 System.out.println("page create control"); //$NON-NLS-1$
  33                 Composite container = new Composite(parent, SWT.NULL);
  34                 GridLayout layout = new GridLayout();
  35                 container.setLayout(layout);
  36                 layout.numColumns = 3;
  37
  38                 if (row == null) {
  39                         System.out.println("Row is null"); //$NON-NLS-1$
  40                 }
  41                 if (row.getColumnNames() == null) {
  42                         System.out.println("Columns are null"); //$NON-NLS-1$
  43                 }
  44                 if (row.getTableData() == null) {
  45                         System.out.println("Data is null"); //$NON-NLS-1$
  46                 }
  47                 Entity entity = row.getEntity();
  48                 columnNames = row.getColumnNames();
  49                 String[] data = row.getTableData();
  50                 for (int i = 0; i < row.getColumnCount(); i++) {
  51                         System.out.println("data = " + i + "=" + data[i]); //$NON-NLS-1$ //$NON-NLS-2$
  52                         System.out.println("column = " + i + "=" + columnNames[i]); //$NON-NLS-1$ //$NON-NLS-2$
  53                 }
  54                 values = new Text[row.getColumnCount()];
  55                 whereValues = new Button[row.getColumnCount()];
  56                 new Label(container, SWT.NULL).setText(Messages.getString("DeleteRowPage.ColumnName")); //$NON-NLS-1$
  57                 new Label(container, SWT.NULL).setText(Messages.getString("DeleteRowPage.Value")); //$NON-NLS-1$
  58                 new Label(container, SWT.NULL).setText(Messages.getString("DeleteRowPage.IncludeIn")); //$NON-NLS-1$
  59                 for (int i = 0; i < row.getColumnCount(); i++) {
  60                         Label label = new Label(container, SWT.NULL);
  61                         label.setText(columnNames[i]);
  62                         values[i] = new Text(container, SWT.BORDER | SWT.SINGLE);
  63                         GridData fullHorizontal = new GridData();
  64                         fullHorizontal.horizontalAlignment = GridData.FILL;
  65                         values[i].setLayoutData(fullHorizontal);
  66                         values[i].setText(data[i]);
  67
  68                         values[i].addModifyListener(new ModifyListener() {
  69                                 public void modifyText(ModifyEvent e) {
  70                                         updateQuery();
  71                                 }
  72                         });
  73
  74                         whereValues[i] = new Button(container, SWT.CHECK);
  75                         whereValues[i].setText(Messages.getString("DeleteRowPage.WhereClause")); //$NON-NLS-1$
  76                         // we check if it's a primary key to select it in the WHERE clause
  77                         Column column = getColumn(entity, columnNames[i]);
  78             whereValues[i].setSelection(column == null ? false : column.isPrimaryKey());
  79                         whereValues[i].addSelectionListener(new SelectionListener() {
  80                                 public void widgetDefaultSelected(SelectionEvent e) {
  81                                 }
  82                                 public void widgetSelected(SelectionEvent e) {
  83                                         updateQuery();
  84                                 }
  85                         });
  86                 }
  87                 query = new Text(container, SWT.MULTI | SWT.READ_ONLY | SWT.WRAP);
  88                 GridData gridData = new GridData();
  89                 gridData.horizontalSpan = layout.numColumns;
  90                 gridData.verticalSpan = 3;
  91                 gridData.horizontalAlignment = GridData.FILL;
  92                 gridData.verticalAlignment = GridData.FILL;
  93                 gridData.grabExcessHorizontalSpace = true;
  94                 gridData.grabExcessVerticalSpace = true;
  95                 query.setLayoutData(gridData);
  96
  97                 setControl(container);
  98         updateQuery();
  99
 100                 setPageComplete(true);
 101         }
 102         public void updateQuery() {
 103                 System.out.println(Messages.getString("DeleteRowPage.UpdatingQuery")); //$NON-NLS-1$
 104                 StringBuffer whereClause = new StringBuffer();
 105                 Bookmark bookmark = row.getBookmark();
 106                 Entity entity = row.getEntity();
 107                 DatabaseAdapter adapter = bookmark.getAdapter();
 108
 109                 int numSelected = 0;
 110                 for (int i = 0; i < columnNames.length; i++) {
 111                         if (whereValues[i].getSelection()) {
 112                                 if (numSelected > 0) whereClause.append(" AND "); //$NON-NLS-1$
 113                                 numSelected++;
 114                                 whereClause.append("("); //$NON-NLS-1$
 115                                 whereClause.append(columnNames[i]);
 116                                 whereClause.append(" = "); //$NON-NLS-1$
 117                 appendColumn(whereClause, entity, columnNames[i], adapter, values[i].getText());
 118                                 whereClause.append(")"); //$NON-NLS-1$
 119                         }
 120                 }
 121                 String query = "DELETE FROM " + row.getTable(); //$NON-NLS-1$
 122                 if (numSelected > 0) {
 123                         query += " WHERE " + whereClause.toString(); //$NON-NLS-1$
 124                 }
 125                 if (numSelected > 0) {
 126                         setMessage(""); //$NON-NLS-1$
 127                 } else {
 128                         setMessage(Messages.getString("DeleteRowPage.WarningNoWhere")); //$NON-NLS-1$
 129                 }
 130                 this.query.setText(query);
 131         }
 132
 133     protected String getQueryText() {
 134         return query.getText();
 135     }
 136 }