[ONOS-2408]Data model and utility class about RFC 7047 (ovsdb protocol).
The whole lib of ovsdb provides the function of encode to jasonRPC and
decode to Pojo to consumer, the bussiness of coordination of
communication is implemented by adapter.
Change-Id: I4c35426273394c1699207e5a4f2e98cead59f1e1
diff --git a/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/schema/TableSchema.java b/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/schema/TableSchema.java
new file mode 100644
index 0000000..caec2ed
--- /dev/null
+++ b/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/schema/TableSchema.java
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2015 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.schema;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+
+import org.onosproject.ovsdb.rfc.schema.type.AtomicColumnType;
+import org.onosproject.ovsdb.rfc.schema.type.UuidBaseType;
+
+/**
+ * A schema for the table represented by table-schema, which consists of a set
+ * of columns.
+ */
+public final class TableSchema {
+
+ private final String name;
+ private final Map<String, ColumnSchema> columnSchemas;
+
+ /**
+ * Constructs a TableSchema object.
+ * @param name the name of table
+ * @param columnSchemas a map of ColumnSchema
+ */
+ public TableSchema(String name, Map<String, ColumnSchema> columnSchemas) {
+ checkNotNull(name, "name is not null");
+ checkNotNull(columnSchemas, "columnSchemas is not null");
+ this.name = name;
+ this.columnSchemas = columnSchemas;
+ }
+
+ /**
+ * Returns the name of table.
+ * @return the name of table
+ */
+ public String name() {
+ return name;
+ }
+
+ /**
+ * Returns a map of ColumnSchema.
+ * @return a map of ColumnSchema
+ */
+ public Map<String, ColumnSchema> columnSchemas() {
+ return this.columnSchemas;
+ }
+
+ /**
+ * Returns a set of column name.
+ * @return a set of column name
+ */
+ public Set<String> getColumnNames() {
+ return this.columnSchemas.keySet();
+ }
+
+ /**
+ * Determine whether contain the column.
+ * @param columnName column name
+ * @return boolean
+ */
+ public boolean hasColumn(String columnName) {
+ return this.getColumnNames().contains(columnName);
+ }
+
+ /**
+ * Returns the ColumnSchema whose name is the columnName.
+ * @param columnName column name
+ * @return ColumnSchema
+ */
+ public ColumnSchema getColumnSchema(String columnName) {
+ return this.columnSchemas.get(columnName);
+ }
+
+ /**
+ * Refer to RFC 7047 Section 3.2. generate initialization columns in each
+ * table namely _uuid and _version.
+ */
+ public void generateInitializationColumns() {
+ columnSchemas
+ .put("_uuid",
+ new ColumnSchema("_uuid",
+ new AtomicColumnType(new UuidBaseType())));
+ columnSchemas
+ .put("_version",
+ new ColumnSchema("_version",
+ new AtomicColumnType(new UuidBaseType())));
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(name, columnSchemas);
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+ if (obj instanceof TableSchema) {
+ final TableSchema other = (TableSchema) obj;
+ return Objects.equals(this.name, other.name)
+ && Objects.equals(this.columnSchemas, other.columnSchemas);
+ }
+ return false;
+ }
+
+ @Override
+ public String toString() {
+ return toStringHelper(this).add("name", name)
+ .add("columnSchemas", columnSchemas).toString();
+ }
+}