2 * Copyright (c) 2014, 2015 EBay Software Foundation and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.ovsdb.lib.schema;
10 import com.fasterxml.jackson.databind.JsonNode;
11 import com.fasterxml.jackson.databind.node.ObjectNode;
12 import java.lang.reflect.Constructor;
13 import java.lang.reflect.InvocationTargetException;
14 import java.util.ArrayList;
15 import java.util.Iterator;
16 import java.util.List;
18 import java.util.Map.Entry;
20 import org.opendaylight.ovsdb.lib.message.TableUpdate;
21 import org.opendaylight.ovsdb.lib.notation.Column;
22 import org.opendaylight.ovsdb.lib.notation.Row;
23 import org.opendaylight.ovsdb.lib.notation.UUID;
24 import org.opendaylight.ovsdb.lib.operations.Insert;
25 import org.opendaylight.ovsdb.lib.schema.BaseType.UuidBaseType;
27 public abstract class TableSchema<E extends TableSchema<E>> {
30 private Map<String, ColumnSchema> columns;
32 protected TableSchema(final String name) {
36 protected TableSchema(final String name, final Map<String, ColumnSchema> columns) {
38 this.columns = columns;
41 public Set<String> getColumns() {
42 return this.columns.keySet();
45 public Map<String, ColumnSchema> getColumnSchemas() {
49 public boolean hasColumn(final String column) {
50 return this.getColumns().contains(column);
53 public ColumnType getColumnType(final String column) {
54 return this.columns.get(column).getType();
57 public <E extends TableSchema<E>> E as(final Class<E> clazz) {
59 Constructor<E> instance = clazz.getConstructor(TableSchema.class);
60 return instance.newInstance(this);
61 } catch (InstantiationException | IllegalAccessException
62 | InvocationTargetException | NoSuchMethodException e) {
63 throw new RuntimeException("exception constructing instance of clazz " + clazz, e);
67 public Insert<E> insert() {
68 return new Insert<>(this);
71 public <D> ColumnSchema<E, Set<D>> multiValuedColumn(final String column, final Class<D> type) {
72 //todo exception handling
74 ColumnSchema<E, Set<D>> columnSchema = columns.get(column);
75 columnSchema.validateType(type);
79 public <K,V> ColumnSchema<E, Map<K,V>> multiValuedColumn(final String column, final Class<K> keyType,
80 final Class<V> valueType) {
81 //todo exception handling
83 ColumnSchema<E, Map<K, V>> columnSchema = columns.get(column);
84 columnSchema.validateType(valueType);
88 public <D> ColumnSchema<E, D> column(final String column, final Class<D> type) {
89 //todo exception handling
91 ColumnSchema<E, D> columnSchema = columns.get(column);
92 if (columnSchema != null) {
93 columnSchema.validateType(type);
98 public ColumnSchema column(final String column) {
99 return this.columns.get(column);
102 public String getName() {
106 protected void setName(final String name) {
110 protected void setColumns(final Map<String, ColumnSchema> columns) {
111 this.columns = columns;
114 public TableUpdate<E> updatesFromJson(final JsonNode value) {
115 TableUpdate<E> tableUpdate = new TableUpdate<>();
116 Iterator<Entry<String, JsonNode>> fields = value.fields();
117 while (fields.hasNext()) {
118 Map.Entry<String, JsonNode> idOldNew = fields.next();
119 String uuid = idOldNew.getKey();
121 ObjectNode newObjectNode = (ObjectNode) idOldNew.getValue().get("new");
122 ObjectNode oldObjectNode = (ObjectNode) idOldNew.getValue().get("old");
124 Row<E> newRow = newObjectNode != null ? createRow(newObjectNode) : null;
125 Row<E> oldRow = oldObjectNode != null ? createRow(oldObjectNode) : null;
127 tableUpdate.addRow(new UUID(uuid), oldRow, newRow);
132 public Row<E> createRow(final ObjectNode rowNode) {
133 List<Column<E, ?>> newColumns = new ArrayList<>();
134 for (Iterator<Map.Entry<String, JsonNode>> iter = rowNode.fields(); iter.hasNext();) {
135 Map.Entry<String, JsonNode> next = iter.next();
136 ColumnSchema<E, Object> schema = column(next.getKey(), Object.class);
138 * Ideally the ColumnSchema shouldn't be null at this stage. But there can be cases in which
139 * the OVSDB manager Schema implementation might decide to include some "hidden" columns that
140 * are NOT reported in getSchema, but decide to report it in unfiltered monitor.
141 * Hence adding some safety checks around that.
143 if (schema != null) {
144 Object value = schema.valueFromJson(next.getValue());
145 newColumns.add(new Column<>(schema, value));
148 return new Row<>(this, newColumns);
151 public List<Row<E>> createRows(final JsonNode rowsNode) {
152 List<Row<E>> rows = new ArrayList<>();
153 for (JsonNode rowNode : rowsNode.get("rows")) {
154 rows.add(createRow((ObjectNode)rowNode));
161 * RFC 7047 Section 3.2 specifies 2 internally generated columns in each table
162 * namely _uuid and _version which are not exposed in get_schema call.
163 * Since these 2 columns are extremely useful for Mutate, update and select operations,
164 * the ColumnSchema for these 2 columns are manually populated.
166 * It is to be noted that these 2 columns are specified as part of the RFC7047 and not
167 * a specific Schema implementation detail & hence adding it by default in the Library
168 * for better application experience using the library.
170 public void populateInternallyGeneratedColumns() {
171 columns.put("_uuid", new ColumnSchema("_uuid", new AtomicColumnType(new UuidBaseType())));
172 columns.put("_version", new ColumnSchema("_version", new AtomicColumnType(new UuidBaseType())));