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/*
* 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.type;
import org.onosproject.ovsdb.rfc.exception.AbnormalJsonNodeException;
import org.onosproject.ovsdb.rfc.utils.ObjectMapperUtil;
import com.fasterxml.jackson.databind.JsonNode;
/**
* ColumnType Factory class.
*/
public final class ColumnTypeFactory {
/**
* Constructs a ColumnTypeFactory object. This class should not be
* instantiated.
*/
private ColumnTypeFactory() {
}
/**
* Those Json's key/value pairs.
*/
public enum Type {
KEY("key"), VALUE("value");
private final String type;
private Type(String type) {
this.type = type;
}
/**
* Returns the type for Type.
* @return the type
*/
public String type() {
return type;
}
}
/**
* JsonNode like
* "flow_tables":{"type":{"key":{"maxInteger":254,"minInteger":0,"type":
* "integer"},"min":0,"value":{"type":"uuid","refTable":"Flow_Table"},"max":
* "unlimited"}}.
* @param columnTypeJson the ColumnType JsonNode
* @return ColumnType
*/
public static ColumnType getColumnTypeFromJson(JsonNode columnTypeJson) {
if (!columnTypeJson.isObject() || !columnTypeJson.has(Type.VALUE.type())) {
return createAtomicColumnType(columnTypeJson);
} else if (!columnTypeJson.isValueNode() && columnTypeJson.has(Type.VALUE.type())) {
return createKeyValuedColumnType(columnTypeJson);
}
String message = "Abnormal ColumnType JsonNode, it should be AtomicColumnType or KeyValuedColumnType"
+ ObjectMapperUtil.convertToString(columnTypeJson);
throw new AbnormalJsonNodeException(message);
}
/**
* Create AtomicColumnType entity.
* @param json JsonNode
* @return AtomicColumnType entity
*/
private static AtomicColumnType createAtomicColumnType(JsonNode json) {
BaseType baseType = BaseTypeFactory.getBaseTypeFromJson(json, Type.KEY.type());
int min = 1;
int max = 1;
JsonNode node = json.get("min");
if (node != null && node.isNumber()) {
min = node.asInt();
}
node = json.get("max");
if (node != null) {
if (node.isNumber()) {
max = node.asInt();
} else if (node.isTextual() && "unlimited".equals(node.asText())) {
max = Integer.MAX_VALUE;
}
}
return new AtomicColumnType(baseType, min, max);
}
/**
* Create KeyValuedColumnType entity.
* @param json JsonNode
* @return KeyValuedColumnType entity
*/
private static KeyValuedColumnType createKeyValuedColumnType(JsonNode json) {
BaseType keyType = BaseTypeFactory.getBaseTypeFromJson(json, Type.KEY.type());
BaseType valueType = BaseTypeFactory.getBaseTypeFromJson(json, Type.VALUE.type());
int min = 1;
int max = 1;
JsonNode node = json.get("min");
if (node != null && node.isNumber()) {
min = node.asInt();
}
node = json.get("max");
if (node != null) {
if (node.isNumber()) {
max = node.asInt();
} else if (node.isTextual() && "unlimited".equals(node.asText())) {
max = Integer.MAX_VALUE;
}
}
return new KeyValuedColumnType(keyType, valueType, min, max);
}
}
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