/**
* @param schemaTable
* @param name
* @param generateAutoIndexName
* @throws SqlJetException
*/
private boolean doDropIndex(String indexName, boolean allowAutoIndex, boolean throwIfFial)
throws SqlJetException {
if (!indexDefs.containsKey(indexName)) {
if (throwIfFial) throw new SqlJetException(SqlJetErrorCode.MISUSE);
return false;
}
final SqlJetBaseIndexDef indexDef = (SqlJetBaseIndexDef) indexDefs.get(indexName);
if (!allowAutoIndex && indexDef.isImplicit()) {
if (throwIfFial)
throw new SqlJetException(
SqlJetErrorCode.MISUSE, String.format(CANT_DELETE_IMPLICIT_INDEX, indexName));
return false;
}
final ISqlJetBtreeSchemaTable schemaTable = openSchemaTable(true);
try {
schemaTable.lock();
try {
if (!schemaTable.goToRow(indexDef.getRowId())
|| !INDEX_TYPE.equals(schemaTable.getTypeField())) {
if (throwIfFial) throw new SqlJetException(SqlJetErrorCode.INTERNAL);
return false;
}
final String n = schemaTable.getNameField();
if (null == n || !indexName.equals(n)) {
if (throwIfFial) throw new SqlJetException(SqlJetErrorCode.INTERNAL);
return false;
}
if (!allowAutoIndex && schemaTable.isNull(ISqlJetBtreeSchemaTable.SQL_FIELD)) {
if (throwIfFial)
throw new SqlJetException(
SqlJetErrorCode.MISUSE, String.format(CANT_DELETE_IMPLICIT_INDEX, indexName));
return false;
}
schemaTable.delete();
} finally {
schemaTable.unlock();
}
} finally {
schemaTable.close();
}
final int page = indexDef.getPage();
final int moved = btree.dropTable(page);
if (moved != 0) {
movePage(page, moved);
}
return true;
}
/**
* @param schemaTable
* @param generateAutoIndexName
* @throws SqlJetException
*/
private SqlJetBaseIndexDef createAutoIndex(
ISqlJetBtreeSchemaTable schemaTable, String tableName, String autoIndexName)
throws SqlJetException {
final int page = btree.createTable(BTREE_CREATE_INDEX_FLAGS);
final SqlJetBaseIndexDef indexDef = new SqlJetBaseIndexDef(autoIndexName, tableName, page);
indexDef.setRowId(schemaTable.insertRecord(INDEX_TYPE, autoIndexName, tableName, page, null));
indexDefs.put(autoIndexName, indexDef);
return indexDef;
}
private void dropTableSafe(String tableName) throws SqlJetException {
if (null == tableName || "".equals(tableName))
throw new SqlJetException(SqlJetErrorCode.MISUSE, "Table name must be not empty");
if (!tableDefs.containsKey(tableName))
throw new SqlJetException(SqlJetErrorCode.MISUSE, "Table not found: " + tableName);
final SqlJetTableDef tableDef = (SqlJetTableDef) tableDefs.get(tableName);
dropTableIndexes(tableDef);
final ISqlJetBtreeSchemaTable schemaTable = openSchemaTable(true);
try {
schemaTable.lock();
try {
db.getOptions().changeSchemaVersion();
if (!schemaTable.goToRow(tableDef.getRowId())
|| !TABLE_TYPE.equals(schemaTable.getTypeField()))
throw new SqlJetException(SqlJetErrorCode.CORRUPT);
final String n = schemaTable.getNameField();
if (null == n || !tableName.equals(n)) throw new SqlJetException(SqlJetErrorCode.CORRUPT);
schemaTable.delete();
} finally {
schemaTable.unlock();
}
} finally {
schemaTable.close();
}
final int page = tableDef.getPage();
final int moved = btree.dropTable(page);
if (moved != 0) {
movePage(page, moved);
}
tableDefs.remove(tableName);
}
private ISqlJetIndexDef createIndexSafe(String sql) throws SqlJetException {
final ParserRuleReturnScope parseIndex = parseIndex(sql);
final CommonTree ast = (CommonTree) parseIndex.getTree();
final SqlJetIndexDef indexDef = new SqlJetIndexDef(ast, 0);
if (null == indexDef.getName()) throw new SqlJetException(SqlJetErrorCode.ERROR);
final String indexName = indexDef.getName();
if ("".equals(indexName)) throw new SqlJetException(SqlJetErrorCode.ERROR);
checkNameReserved(indexName);
if (indexDefs.containsKey(indexName)) {
if (indexDef.isKeepExisting()) {
return indexDefs.get(indexName);
} else {
throw new SqlJetException(
SqlJetErrorCode.ERROR, "Index \"" + indexName + "\" exists already");
}
}
checkNameConflict(SqlJetSchemaObjectType.INDEX, indexName);
if (null == indexDef.getTableName()) throw new SqlJetException(SqlJetErrorCode.ERROR);
final String tableName = indexDef.getTableName();
if ("".equals(tableName)) throw new SqlJetException(SqlJetErrorCode.ERROR);
final List<ISqlJetIndexedColumn> columns = indexDef.getColumns();
if (null == columns) throw new SqlJetException(SqlJetErrorCode.ERROR);
final ISqlJetTableDef tableDef = getTable(tableName);
if (null == tableDef) throw new SqlJetException(SqlJetErrorCode.ERROR);
for (final ISqlJetIndexedColumn column : columns) {
if (null == column.getName()) throw new SqlJetException(SqlJetErrorCode.ERROR);
final String columnName = column.getName();
if ("".equals(columnName)) throw new SqlJetException(SqlJetErrorCode.ERROR);
if (null == tableDef.getColumn(columnName))
throw new SqlJetException(
SqlJetErrorCode.ERROR,
"Column \"" + columnName + "\" not found in table \"" + tableName + "\"");
}
final ISqlJetBtreeSchemaTable schemaTable = openSchemaTable(true);
final String createIndexSQL =
indexDef.isUnique() ? getCreateIndexUniqueSql(parseIndex) : getCreateIndexSql(parseIndex);
try {
schemaTable.lock();
try {
db.getOptions().changeSchemaVersion();
final int page = btree.createTable(BTREE_CREATE_INDEX_FLAGS);
final long rowId =
schemaTable.insertRecord(INDEX_TYPE, indexName, tableName, page, createIndexSQL);
indexDef.setPage(page);
indexDef.setRowId(rowId);
indexDef.bindColumns(tableDef);
indexDefs.put(indexName, indexDef);
final SqlJetBtreeIndexTable indexTable =
new SqlJetBtreeIndexTable(btree, indexDef.getName(), true);
try {
indexTable.reindex(this);
} finally {
indexTable.close();
}
return indexDef;
} finally {
schemaTable.unlock();
}
} finally {
schemaTable.close();
}
}
private ISqlJetTableDef createTableSafe(String sql, boolean internal) throws SqlJetException {
final RuleReturnScope parseTable = parseTable(sql);
final CommonTree ast = (CommonTree) parseTable.getTree();
if (isCreateVirtualTable(ast)) {
throw new SqlJetException(SqlJetErrorCode.ERROR);
}
final SqlJetTableDef tableDef = new SqlJetTableDef(ast, 0);
if (null == tableDef.getName()) throw new SqlJetException(SqlJetErrorCode.ERROR);
final String tableName = tableDef.getName();
if ("".equals(tableName)) throw new SqlJetException(SqlJetErrorCode.ERROR);
if (!internal) {
checkNameReserved(tableName);
}
if (tableDefs.containsKey(tableName)) {
if (tableDef.isKeepExisting()) {
return tableDefs.get(tableName);
} else {
throw new SqlJetException(
SqlJetErrorCode.ERROR, "Table \"" + tableName + "\" exists already");
}
}
checkNameConflict(SqlJetSchemaObjectType.TABLE, tableName);
checkFieldNamesRepeatsConflict(tableDef.getName(), tableDef.getColumns());
final List<ISqlJetColumnDef> columns = tableDef.getColumns();
if (null == columns || 0 == columns.size()) throw new SqlJetException(SqlJetErrorCode.ERROR);
final String createTableSql = getCreateTableSql(parseTable);
final ISqlJetBtreeSchemaTable schemaTable = openSchemaTable(true);
try {
schemaTable.lock();
try {
db.getOptions().changeSchemaVersion();
final int page = btree.createTable(BTREE_CREATE_TABLE_FLAGS);
final long rowId =
schemaTable.insertRecord(TABLE_TYPE, tableName, tableName, page, createTableSql);
addConstraints(schemaTable, tableDef);
tableDef.setPage(page);
tableDef.setRowId(rowId);
tableDefs.put(tableName, tableDef);
return tableDef;
} finally {
schemaTable.unlock();
}
} finally {
schemaTable.close();
}
}