| /* |
| * Copyright 2015-present Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.ovsdb.rfc.tableservice; |
| |
| import static com.google.common.base.MoreObjects.toStringHelper; |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import java.util.Objects; |
| |
| import org.onosproject.ovsdb.rfc.exception.ColumnSchemaNotFoundException; |
| import org.onosproject.ovsdb.rfc.exception.TableSchemaNotFoundException; |
| import org.onosproject.ovsdb.rfc.exception.VersionMismatchException; |
| import org.onosproject.ovsdb.rfc.notation.Column; |
| import org.onosproject.ovsdb.rfc.notation.Row; |
| import org.onosproject.ovsdb.rfc.notation.Uuid; |
| import org.onosproject.ovsdb.rfc.schema.ColumnSchema; |
| import org.onosproject.ovsdb.rfc.schema.DatabaseSchema; |
| import org.onosproject.ovsdb.rfc.schema.TableSchema; |
| import org.onosproject.ovsdb.rfc.table.OvsdbTable; |
| import org.onosproject.ovsdb.rfc.table.VersionNum; |
| import org.onosproject.ovsdb.rfc.utils.VersionUtil; |
| |
| /** |
| * Representation of conversion between Ovsdb table and Row. |
| */ |
| public abstract class AbstractOvsdbTableService implements OvsdbTableService { |
| |
| private final DatabaseSchema dbSchema; |
| private final Row row; |
| private final TableDescription tableDesc; |
| |
| /** |
| * Constructs a AbstractOvsdbTableService object. |
| * @param dbSchema DatabaseSchema entity |
| * @param row Row entity |
| * @param table table name |
| * @param formVersion the initial version |
| */ |
| public AbstractOvsdbTableService(DatabaseSchema dbSchema, Row row, OvsdbTable table, |
| VersionNum formVersion) { |
| checkNotNull(dbSchema, "database schema cannot be null"); |
| checkNotNull(row, "row cannot be null"); |
| checkNotNull(table, "table cannot be null"); |
| checkNotNull(formVersion, "the initial version cannot be null"); |
| this.dbSchema = dbSchema; |
| row.setTableName(table.tableName()); |
| this.row = row; |
| TableDescription tableDesc = new TableDescription(table, formVersion); |
| this.tableDesc = tableDesc; |
| } |
| |
| /** |
| * Check whether the parameter of dbSchema is valid and check whether the |
| * table is existent in Database Schema. |
| */ |
| private boolean isValid() { |
| if (dbSchema == null) { |
| return false; |
| } |
| if (!dbSchema.name().equalsIgnoreCase(tableDesc.database())) { |
| return false; |
| } |
| checkTableSchemaVersion(); |
| return true; |
| } |
| |
| /** |
| * Check the table version. |
| */ |
| private void checkTableSchemaVersion() { |
| String fromVersion = tableDesc.fromVersion(); |
| String untilVersion = tableDesc.untilVersion(); |
| String schemaVersion = dbSchema.version(); |
| checkVersion(schemaVersion, fromVersion, untilVersion); |
| } |
| |
| /** |
| * Check the column version. |
| * @param columnDesc ColumnDescription entity |
| */ |
| private void checkColumnSchemaVersion(ColumnDescription columnDesc) { |
| String fromVersion = columnDesc.fromVersion(); |
| String untilVersion = columnDesc.untilVersion(); |
| String schemaVersion = dbSchema.version(); |
| checkVersion(schemaVersion, fromVersion, untilVersion); |
| } |
| |
| /** |
| * Check whether the DatabaseSchema version between the initial version and |
| * the end of the version. |
| * @param schemaVersion DatabaseSchema version |
| * @param fromVersion The initial version |
| * @param untilVersion The end of the version |
| * @throws VersionMismatchException this is a version mismatch exception |
| */ |
| private void checkVersion(String schemaVersion, String fromVersion, String untilVersion) { |
| VersionUtil.versionMatch(fromVersion); |
| VersionUtil.versionMatch(untilVersion); |
| if (!fromVersion.equals(VersionUtil.DEFAULT_VERSION_STRING)) { |
| if (VersionUtil.versionCompare(schemaVersion, fromVersion) < 0) { |
| String message = VersionMismatchException.createFromMessage(schemaVersion, |
| fromVersion); |
| throw new VersionMismatchException(message); |
| } |
| } |
| if (!untilVersion.equals(VersionUtil.DEFAULT_VERSION_STRING)) { |
| if (VersionUtil.versionCompare(untilVersion, schemaVersion) < 0) { |
| String message = VersionMismatchException.createToMessage(schemaVersion, |
| untilVersion); |
| throw new VersionMismatchException(message); |
| } |
| } |
| } |
| |
| /** |
| * Returns TableSchema from dbSchema by table name. |
| * @return TableSchema |
| */ |
| private TableSchema getTableSchema() { |
| String tableName = tableDesc.name(); |
| return dbSchema.getTableSchema(tableName); |
| } |
| |
| /** |
| * Returns ColumnSchema from TableSchema by column name. |
| * @param columnName column name |
| * @return ColumnSchema |
| */ |
| private ColumnSchema getColumnSchema(String columnName) { |
| TableSchema tableSchema = getTableSchema(); |
| if (tableSchema == null) { |
| String message = TableSchemaNotFoundException.createMessage(tableDesc.name(), |
| dbSchema.name()); |
| throw new TableSchemaNotFoundException(message); |
| } |
| ColumnSchema columnSchema = tableSchema.getColumnSchema(columnName); |
| if (columnSchema == null) { |
| String message = ColumnSchemaNotFoundException.createMessage(columnName, |
| tableSchema.name()); |
| throw new ColumnSchemaNotFoundException(message); |
| } |
| return columnSchema; |
| } |
| |
| @Override |
| public Column getColumnHandler(ColumnDescription columnDesc) { |
| if (!isValid()) { |
| return null; |
| } |
| String columnName = columnDesc.name(); |
| checkColumnSchemaVersion(columnDesc); |
| ColumnSchema columnSchema = getColumnSchema(columnName); |
| if (row == null) { |
| return null; |
| } |
| return row.getColumn(columnSchema.name()); |
| } |
| |
| @Override |
| public Object getDataHandler(ColumnDescription columnDesc) { |
| if (!isValid()) { |
| return null; |
| } |
| String columnName = columnDesc.name(); |
| checkColumnSchemaVersion(columnDesc); |
| ColumnSchema columnSchema = getColumnSchema(columnName); |
| if (row == null || row.getColumn(columnSchema.name()) == null) { |
| return null; |
| } |
| return row.getColumn(columnSchema.name()).data(); |
| } |
| |
| @Override |
| public void setDataHandler(ColumnDescription columnDesc, Object obj) { |
| if (!isValid()) { |
| return; |
| } |
| String columnName = columnDesc.name(); |
| checkColumnSchemaVersion(columnDesc); |
| ColumnSchema columnSchema = getColumnSchema(columnName); |
| Column column = new Column(columnSchema.name(), obj); |
| row.addColumn(columnName, column); |
| } |
| |
| @Override |
| public Uuid getTableUuid() { |
| if (!isValid()) { |
| return null; |
| } |
| ColumnDescription columnDesc = new ColumnDescription("_uuid", "getTableUuid"); |
| return (Uuid) getDataHandler(columnDesc); |
| } |
| |
| @Override |
| public Column getTableUuidColumn() { |
| if (!isValid()) { |
| return null; |
| } |
| ColumnDescription columnDesc = new ColumnDescription("_uuid", "getTableUuidColumn"); |
| return getColumnHandler(columnDesc); |
| } |
| |
| @Override |
| public Uuid getTableVersion() { |
| if (!isValid()) { |
| return null; |
| } |
| ColumnDescription columnDesc = new ColumnDescription("_version", "getTableVersion"); |
| return (Uuid) getDataHandler(columnDesc); |
| } |
| |
| @Override |
| public Column getTableVersionColumn() { |
| if (!isValid()) { |
| return null; |
| } |
| ColumnDescription columnDesc = new ColumnDescription("_version", "getTableVersionColumn"); |
| return getColumnHandler(columnDesc); |
| } |
| |
| /** |
| * Get DatabaseSchema entity. |
| * @return DatabaseSchema entity |
| */ |
| public DatabaseSchema dbSchema() { |
| return dbSchema; |
| } |
| |
| /** |
| * Get Row entity. |
| * @return Row entity |
| */ |
| public Row getRow() { |
| if (!isValid()) { |
| return null; |
| } |
| return this.row; |
| } |
| |
| /** |
| * Get TableDescription entity. |
| * @return TableDescription entity |
| */ |
| public TableDescription tableDesc() { |
| return tableDesc; |
| } |
| |
| @Override |
| public int hashCode() { |
| return row.hashCode(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof AbstractOvsdbTableService) { |
| final AbstractOvsdbTableService other = (AbstractOvsdbTableService) obj; |
| return Objects.equals(this.row, other.row); |
| } |
| return false; |
| } |
| |
| @Override |
| public String toString() { |
| TableSchema schema = getTableSchema(); |
| String tableName = schema.name(); |
| return toStringHelper(this).add("tableName", tableName).add("row", row).toString(); |
| } |
| } |