Revert "364093 - Revert some earlier changes to support tables outside the scope of generation."

This reverts commit 55d5c5f275271bbe6df3787b1d6465fc572548c6.
diff --git a/jpa/plugins/org.eclipse.jpt.jpa.ui/src/org/eclipse/jpt/jpa/ui/internal/wizards/gen/AssociationTablesPage.java b/jpa/plugins/org.eclipse.jpt.jpa.ui/src/org/eclipse/jpt/jpa/ui/internal/wizards/gen/AssociationTablesPage.java
index d0411aa..74e2573 100644
--- a/jpa/plugins/org.eclipse.jpt.jpa.ui/src/org/eclipse/jpt/jpa/ui/internal/wizards/gen/AssociationTablesPage.java
+++ b/jpa/plugins/org.eclipse.jpt.jpa.ui/src/org/eclipse/jpt/jpa/ui/internal/wizards/gen/AssociationTablesPage.java
@@ -13,9 +13,13 @@
 import static org.eclipse.jpt.jpa.ui.internal.wizards.gen.SWTUtil.createButton;
 import static org.eclipse.jpt.jpa.ui.internal.wizards.gen.SWTUtil.createLabel;
 import static org.eclipse.jpt.jpa.ui.internal.wizards.gen.SWTUtil.createText;
+
+import java.util.ArrayList;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.resource.ResourceManager;
 import org.eclipse.jpt.common.utility.internal.CollectionTools;
+import org.eclipse.jpt.jpa.db.Schema;
+import org.eclipse.jpt.jpa.db.Table;
 import org.eclipse.jpt.jpa.gen.internal.Association;
 import org.eclipse.jpt.jpa.gen.internal.ORMGenCustomizer;
 import org.eclipse.jpt.jpa.ui.internal.ImageRepository;
@@ -30,6 +34,7 @@
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Text;
 
@@ -147,7 +152,7 @@
 			public void widgetDefaultSelected(SelectionEvent e) {}
 
 			public void widgetSelected(SelectionEvent e) {
-				SelectTableDialog dlg = new SelectTableDialog( SWTUtil.getShell(), resourceManager, customizer.getTableNames() );
+				SelectTableDialog dlg = new SelectTableDialog( SWTUtil.getShell(), resourceManager, customizer.getSchema() );
 				if( dlg.open() == Dialog.OK){
 					joinTableTextField.setText( dlg.getSelectedTable() );
 					getWizardDataModel().put( NewAssociationWizard.ASSOCIATION_JOIN_TABLE, joinTableTextField.getText() );
@@ -225,9 +230,17 @@
 	}
 	
 	private String buildJoinTableErrorMessage() {
-		if (!CollectionTools.contains(this.customizer.getTableNames(), this.joinTableTextField.getText())) {
+		if (!CollectionTools.contains(this.getAllTableNames(this.customizer.getSchema()), this.joinTableTextField.getText())) {
 			return NLS.bind(JptUiEntityGenMessages.GenerateEntitiesWizard_newAssoc_tablesPage_nonexsistent_join_table, this.joinTableTextField.getText());
 		}
 		return null;
 	}
+	
+	protected ArrayList<String> getAllTableNames(Schema schema) {
+		ArrayList<String> list = new ArrayList<String>();
+		for (Table table : schema.getTables()) {
+			list.add(table.getName());
+		}
+		return list;
+	}
 }