/**
* Adds a feature to the PrimaryKey attribute of the DatabaseSchemaUtils object
*
* @param db The feature to be added to the PrimaryKey attribute
* @param primaryKey The feature to be added to the PrimaryKey attribute
* @param dbTable The feature to be added to the PrimaryKey attribute
* @exception SQLException Description of the Exception
*/
public static void addPrimaryKey(Connection db, DatabaseTable dbTable, String primaryKey)
throws SQLException {
boolean commit = db.getAutoCommit();
try {
if (commit) {
db.setAutoCommit(false);
}
// Create a clone 'y' of the table 'x' specified
DatabaseTable clone = new DatabaseTable(dbTable);
clone.setTableName(dbTable.getTableName() + "_clone");
clone.setSequenceName("");
clone.create(db);
System.out.println("Inserting into clone");
// Move data from 'x' into its clone 'y'
dbTable.selectInto(db, clone);
// Delete data from 'x' and drop table 'x'. No need to drop the sequence since the table has
// no primary key
System.out.println("Dropping dbTable");
dbTable.drop(db, false);
System.out.println("Creating dbTable");
// Create a new 'x' with a primary key column
DatabaseColumn column = new DatabaseColumn(primaryKey, java.sql.Types.INTEGER);
column.setIsPrimaryKey(true);
dbTable.addColumn(0, column);
dbTable.create(db);
System.out.println("Inserting back into dbTable");
// Move data from 'y' into the new 'x'
clone.selectInto(db, dbTable);
// Delete data from 'y' and drop clone 'y'. No need to drop the sequence since the clone has
// no primary key
System.out.println("Dropping clone");
clone.drop(db, false);
if (commit) {
db.commit();
}
} catch (SQLException e) {
e.printStackTrace(System.out);
if (commit) {
db.rollback();
}
throw new SQLException(e.getMessage());
} finally {
if (commit) {
db.setAutoCommit(true);
}
}
}
public void operateTable(SQLiteDatabase db, String actionString) {
Class<DatabaseColumn>[] columnsClasses = DatabaseColumn.getSubClasses();
DatabaseColumn columns = null;
for (int i = 0; i < columnsClasses.length; i++) {
try {
columns = columnsClasses[i].newInstance();
if ("".equals(actionString) || actionString == null) {
db.execSQL(columns.getTableCreateor());
} else {
db.execSQL(actionString + columns.getTableName());
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
/**
* Adds a feature to the PrimaryKey attribute of the DatabaseSchemaUtils class
*
* @param db The feature to be added to the PrimaryKey attribute
* @param primaryKeys The feature to be added to the PrimaryKey attribute
* @exception SQLException Description of the Exception
*/
public static void addPrimaryKey(Connection db, PropertyMapList mappings, HashMap primaryKeys)
throws SQLException {
Iterator i = primaryKeys.keySet().iterator();
while (i.hasNext()) {
String elementName = (String) i.next();
PropertyMap thisMap = (PropertyMap) mappings.getMap(elementName);
if (thisMap != null) {
System.out.println("\nElement name: " + elementName);
DatabaseTable dbTable = new DatabaseTable(thisMap.getTable(), thisMap.getSequence());
dbTable.setDbType(DatabaseUtils.getType(db));
Iterator properties = thisMap.iterator();
while (properties.hasNext()) {
Property thisProperty = (Property) properties.next();
if (!thisProperty.getField().equals(thisMap.getUniqueField())) {
DatabaseColumn column =
new DatabaseColumn(thisProperty.getField(), thisProperty.getSqlType());
if (thisProperty.hasLookupValue()) {
PropertyMap lookupMap = (PropertyMap) mappings.getMap(thisProperty.getLookupValue());
column.setReferenceTable(lookupMap.getTable());
column.setReferenceColumn(lookupMap.getUniqueField());
}
column.setAllowsNull(thisProperty.allowsNull());
if (thisProperty.getSize() != null) {
column.setSize(thisProperty.getSize());
}
if (thisProperty.hasDefaultValue()) {
column.setDefaultValue(thisProperty.getDefaultValue());
}
// print(column.toString());
dbTable.addColumn(column);
}
}
System.out.println("Adding primary key...");
DatabaseSchemaUtils.addPrimaryKey(db, dbTable, (String) primaryKeys.get(elementName));
}
}
}
