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.V_SCROLL);
  34                 GridLayout layout = new GridLayout();
  35                 container.setLayout(layout);
  36                 layout.numColumns = 3;
  37
  38                 Entity entity = this.results.getEntity();
  39                 columnNames = this.results.getColumnNames();
  40
  41                 values = new Text[columnNames.length];
  42                 whereValues = new Button[columnNames.length];
  43                 new Label(container, SWT.NULL).setText(Messages.getString("DeleteRowPage.ColumnName")); //$NON-NLS-1$
  44                 new Label(container, SWT.NULL).setText(Messages.getString("DeleteRowPage.Value")); //$NON-NLS-1$
  45                 new Label(container, SWT.NULL).setText(Messages.getString("DeleteRowPage.IncludeIn")); //$NON-NLS-1$
  46                 for (int i = 0; i < columnNames.length; i++) {
  47                         Label label = new Label(container, SWT.NULL);
  48                         label.setText(columnNames[i]);
  49                         values[i] = new Text(container, SWT.BORDER | SWT.SINGLE);
  50                         Object object = this.row == null ? null : this.row.get(i+1);
  51                         values[i].setText(object == null ? "" : object.toString());
  52                         GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
  53                         gridData.widthHint = 150;
  54                         values[i].setLayoutData(gridData);
  55                         values[i].addModifyListener(new ModifyListener() {
  56                                 public void modifyText(ModifyEvent event) {
  57                                         updateQuery();
  58                                 }
  59                         });
  60
  61                         whereValues[i] = new Button(container, SWT.CHECK);
  62                         whereValues[i].setText(Messages.getString("DeleteRowPage.WhereClause")); //$NON-NLS-1$
  63                         // we check if it's a primary key to select it in the WHERE clause
  64                         Column column = getColumn(entity, columnNames[i]);
  65             whereValues[i].setSelection(column == null ? false : column.isPrimaryKey());
  66                         whereValues[i].addSelectionListener(new SelectionListener() {
  67                                 public void widgetDefaultSelected(SelectionEvent e) {
  68                                 }
  69                                 public void widgetSelected(SelectionEvent e) {
  70                                         updateQuery();
  71                                 }
  72                         });
  73                 }
  74                 query = new Text(container, SWT.MULTI | SWT.READ_ONLY | SWT.WRAP);
  75                 GridData gridData = new GridData();
  76                 gridData.horizontalSpan = layout.numColumns;
  77                 gridData.verticalSpan = 3;
  78                 gridData.horizontalAlignment = GridData.FILL;
  79                 gridData.verticalAlignment = GridData.FILL;
  80                 gridData.grabExcessHorizontalSpace = true;
  81                 gridData.grabExcessVerticalSpace = true;
  82                 query.setLayoutData(gridData);
  83
  84                 setControl(container);
  85         updateQuery();
  86
  87                 setPageComplete(true);
  88         }
  89         public void updateQuery() {
  90                 System.out.println(Messages.getString("DeleteRowPage.UpdatingQuery")); //$NON-NLS-1$
  91                 StringBuffer whereClause = new StringBuffer();
  92                 Bookmark bookmark = this.results.getBookmark();
  93                 Entity entity = this.results.getEntity();
  94                 DatabaseAdapter adapter = bookmark.getAdapter();
  95
  96                 int numSelected = 0;
  97                 for (int i = 0; i < columnNames.length; i++) {
  98                         if (whereValues[i].getSelection()) {
  99                                 if (numSelected > 0) whereClause.append(" AND "); //$NON-NLS-1$
 100                                 numSelected++;
 101                                 whereClause.append("("); //$NON-NLS-1$
 102                                 whereClause.append(columnNames[i]);
 103                                 whereClause.append(" = "); //$NON-NLS-1$
 104                 appendColumn(whereClause, entity, columnNames[i], adapter, values[i].getText());
 105                                 whereClause.append(")"); //$NON-NLS-1$
 106                         }
 107                 }
 108                 String query = "DELETE FROM " + this.results.getEntity().getQuotedTableName(); //$NON-NLS-1$
 109                 if (numSelected > 0) {
 110                         query += " WHERE " + whereClause.toString(); //$NON-NLS-1$
 111                 }
 112                 if (numSelected > 0) {
 113                         setMessage(""); //$NON-NLS-1$
 114                 } else {
 115                         setMessage(Messages.getString("DeleteRowPage.WarningNoWhere")); //$NON-NLS-1$
 116                 }
 117                 this.query.setText(query);
 118         }
 119
 120     protected String getQueryText() {
 121         return query.getText();
 122     }
 123 }