Example #1
0
  /**
   * @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;
  }
Example #2
0
  private ISqlJetVirtualTableDef createVirtualTableSafe(String sql, int page)
      throws SqlJetException {

    final RuleReturnScope parseTable = parseTable(sql);
    final CommonTree ast = (CommonTree) parseTable.getTree();

    if (!isCreateVirtualTable(ast)) {
      throw new SqlJetException(SqlJetErrorCode.ERROR);
    }

    final SqlJetVirtualTableDef tableDef = new SqlJetVirtualTableDef(ast, 0);
    if (null == tableDef.getTableName()) throw new SqlJetException(SqlJetErrorCode.ERROR);
    final String tableName = tableDef.getTableName();
    if ("".equals(tableName)) {
      throw new SqlJetException(SqlJetErrorCode.ERROR);
    }

    checkNameReserved(tableName);
    checkFieldNamesRepeatsConflict(tableDef.getTableName(), tableDef.getModuleColumns());

    if (virtualTableDefs.containsKey(tableName)) {
      throw new SqlJetException(
          SqlJetErrorCode.ERROR, "Virtual table \"" + tableName + "\" exists already");
    }

    checkNameConflict(SqlJetSchemaObjectType.VIRTUAL_TABLE, tableName);

    final ISqlJetBtreeSchemaTable schemaTable = openSchemaTable(true);
    final String createVirtualTableSQL = getCreateVirtualTableSql(parseTable);

    try {

      schemaTable.lock();

      try {

        db.getOptions().changeSchemaVersion();

        final long rowId =
            schemaTable.insertRecord(TABLE_TYPE, tableName, tableName, page, createVirtualTableSQL);

        tableDef.setPage(page);
        tableDef.setRowId(rowId);
        virtualTableDefs.put(tableName, tableDef);
        return tableDef;

      } finally {
        schemaTable.unlock();
      }

    } finally {
      schemaTable.close();
    }
  }
Example #3
0
 private void init() throws SqlJetException {
   if (db.getOptions().getSchemaVersion() == 0) return;
   final ISqlJetBtreeSchemaTable table = openSchemaTable(false);
   try {
     table.lock();
     try {
       readShema(table);
     } finally {
       table.unlock();
     }
   } finally {
     table.close();
   }
 }
Example #4
0
  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);
  }
Example #5
0
  /**
   * @param virtualTableName
   * @param indexName
   * @return
   * @throws SqlJetException
   */
  private ISqlJetIndexDef createIndexForVirtualTableSafe(String virtualTableName, String indexName)
      throws SqlJetException {

    if (null == virtualTableName || "".equals(virtualTableName))
      throw new SqlJetException(SqlJetErrorCode.ERROR);
    if (null == indexName || "".equals(indexName)) throw new SqlJetException(SqlJetErrorCode.ERROR);

    checkNameReserved(indexName);

    if (indexDefs.containsKey(indexName)) {
      throw new SqlJetException(
          SqlJetErrorCode.ERROR, "Index \"" + indexName + "\" exists already");
    }

    checkNameConflict(SqlJetSchemaObjectType.INDEX, indexName);

    final ISqlJetVirtualTableDef tableDef = getVirtualTable(virtualTableName);
    if (null == tableDef) throw new SqlJetException(SqlJetErrorCode.ERROR);

    final ISqlJetBtreeSchemaTable schemaTable = openSchemaTable(true);

    try {

      schemaTable.lock();

      try {

        db.getOptions().changeSchemaVersion();

        final ISqlJetIndexDef indexDef =
            createAutoIndex(schemaTable, tableDef.getTableName(), indexName);

        indexDefs.put(indexName, indexDef);

        return indexDef;

      } finally {
        schemaTable.unlock();
      }

    } finally {
      schemaTable.close();
    }
  }
Example #6
0
  /**
   * @param page
   * @param moved
   * @throws SqlJetException
   */
  private void movePage(final int page, final int moved) throws SqlJetException {
    final ISqlJetBtreeSchemaTable schemaTable = openSchemaTable(true);
    try {
      schemaTable.lock();
      try {
        for (schemaTable.first(); !schemaTable.eof(); schemaTable.next()) {
          final long pageField = schemaTable.getPageField();
          if (pageField == moved) {
            final String nameField = schemaTable.getNameField();
            schemaTable.updateRecord(
                schemaTable.getRowId(),
                schemaTable.getTypeField(),
                nameField,
                schemaTable.getTableField(),
                page,
                schemaTable.getSqlField());
            final ISqlJetIndexDef index = getIndex(nameField);
            if (index != null) {
              if (index instanceof SqlJetBaseIndexDef) {
                ((SqlJetBaseIndexDef) index).setPage(page);
              }
            } else {
              final ISqlJetTableDef table = getTable(nameField);
              if (table != null) {
                if (table instanceof SqlJetTableDef) {
                  ((SqlJetTableDef) table).setPage(page);
                }
              }
            }
            return;
          }
        }
      } finally {
        schemaTable.unlock();
      }

    } finally {
      schemaTable.close();
    }
  }
Example #7
0
  /**
   * @param tableName
   * @param newTableName
   * @param newColumnDef
   * @return
   * @throws SqlJetException
   */
  private ISqlJetTableDef alterTableSafe(final SqlJetAlterTableDef alterTableDef)
      throws SqlJetException {

    assert (null != alterTableDef);
    String tableName = alterTableDef.getTableName();
    String newTableName = alterTableDef.getNewTableName();
    ISqlJetColumnDef newColumnDef = alterTableDef.getNewColumnDef();

    if (null == tableName) {
      throw new SqlJetException(SqlJetErrorCode.MISUSE, "Table name isn't defined");
    }

    if (null == newTableName && null == newColumnDef) {
      throw new SqlJetException(SqlJetErrorCode.MISUSE, "Not defined any altering");
    }

    boolean renameTable = false;
    if (null != newTableName) {
      renameTable = true;
    } else {
      newTableName = tableName;
    }

    if (renameTable && tableDefs.containsKey(newTableName)) {
      throw new SqlJetException(
          SqlJetErrorCode.MISUSE, String.format("Table \"%s\" already exists", newTableName));
    }

    final SqlJetTableDef tableDef = (SqlJetTableDef) tableDefs.get(tableName);
    if (null == tableDef) {
      throw new SqlJetException(
          SqlJetErrorCode.MISUSE, String.format("Table \"%s\" not found", tableName));
    }

    List<ISqlJetColumnDef> columns = tableDef.getColumns();
    if (null != newColumnDef) {

      final String fieldName = newColumnDef.getName();
      if (tableDef.getColumn(fieldName) != null) {
        throw new SqlJetException(
            SqlJetErrorCode.MISUSE,
            String.format("Field \"%s\" already exists in table \"%s\"", fieldName, tableName));
      }

      final List<ISqlJetColumnConstraint> constraints = newColumnDef.getConstraints();
      if (null != constraints && 0 != constraints.size()) {
        boolean notNull = false;
        boolean defaultValue = false;
        for (final ISqlJetColumnConstraint constraint : constraints) {
          if (constraint instanceof ISqlJetColumnNotNull) {
            notNull = true;
          } else if (constraint instanceof ISqlJetColumnDefault) {
            defaultValue = true;
          } else {
            throw new SqlJetException(
                SqlJetErrorCode.MISUSE,
                String.format("Invalid constraint: %s", constraint.toString()));
          }
        }
        if (notNull && !defaultValue) {
          throw new SqlJetException(
              SqlJetErrorCode.MISUSE, "NOT NULL requires to have DEFAULT value");
        }
      }

      columns = new ArrayList<ISqlJetColumnDef>(columns);
      columns.add(newColumnDef);
    }

    final int page = tableDef.getPage();
    final long rowId = tableDef.getRowId();

    final SqlJetTableDef alterDef =
        new SqlJetTableDef(
            newTableName,
            null,
            tableDef.isTemporary(),
            false,
            columns,
            tableDef.getConstraints(),
            page,
            rowId);

    final ISqlJetBtreeSchemaTable schemaTable = openSchemaTable(true);
    try {
      schemaTable.lock();
      try {

        if (!schemaTable.goToRow(rowId)) {
          throw new SqlJetException(SqlJetErrorCode.CORRUPT);
        }

        final String typeField = schemaTable.getTypeField();
        final String nameField = schemaTable.getNameField();
        final String tableField = schemaTable.getTableField();
        final int pageField = schemaTable.getPageField();

        if (null == typeField || !TABLE_TYPE.equals(typeField)) {
          throw new SqlJetException(SqlJetErrorCode.CORRUPT);
        }
        if (null == nameField || !tableName.equals(nameField)) {
          throw new SqlJetException(SqlJetErrorCode.CORRUPT);
        }
        if (null == tableField || !tableName.equals(tableField)) {
          throw new SqlJetException(SqlJetErrorCode.CORRUPT);
        }
        if (0 == pageField || pageField != page) {
          throw new SqlJetException(SqlJetErrorCode.CORRUPT);
        }

        final String alteredSql = getTableAlteredSql(schemaTable.getSqlField(), alterTableDef);

        db.getOptions().changeSchemaVersion();

        schemaTable.insertRecord(TABLE_TYPE, newTableName, newTableName, page, alteredSql);

        if (renameTable && !tableName.equals(newTableName)) {
          renameTablesIndices(
              schemaTable, tableName, newTableName, getAlterTableName(alterTableDef));
        }

        tableDefs.remove(tableName);
        tableDefs.put(newTableName, alterDef);

        return alterDef;

      } finally {
        schemaTable.unlock();
      }
    } finally {
      schemaTable.close();
    }
  }
Example #8
0
  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();
    }
  }
Example #9
0
  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();
    }
  }