org.onosproject.ovsdb.rfc.utils.TransValueUtil Maven / Gradle / Ivy
/*
* 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.utils;
import java.util.Map;
import java.util.Set;
import org.onosproject.ovsdb.rfc.notation.OvsdbMap;
import org.onosproject.ovsdb.rfc.notation.OvsdbSet;
import org.onosproject.ovsdb.rfc.notation.RefTableRow;
import org.onosproject.ovsdb.rfc.notation.Uuid;
import org.onosproject.ovsdb.rfc.schema.type.AtomicColumnType;
import org.onosproject.ovsdb.rfc.schema.type.BaseType;
import org.onosproject.ovsdb.rfc.schema.type.BooleanBaseType;
import org.onosproject.ovsdb.rfc.schema.type.ColumnType;
import org.onosproject.ovsdb.rfc.schema.type.IntegerBaseType;
import org.onosproject.ovsdb.rfc.schema.type.KeyValuedColumnType;
import org.onosproject.ovsdb.rfc.schema.type.RealBaseType;
import org.onosproject.ovsdb.rfc.schema.type.StringBaseType;
import org.onosproject.ovsdb.rfc.schema.type.UuidBaseType;
import com.fasterxml.jackson.databind.JsonNode;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
/**
* Object value utility class.
*/
public final class TransValueUtil {
/**
* Constructs a TransValueUtil object. Utility classes should not have a
* public or default constructor, otherwise IDE will compile unsuccessfully.
* This class should not be instantiated.
*/
private TransValueUtil() {
}
/**
* if the type is Set, convert into OvsdbSet, if Map, convert into OvsdbMap.
* @param value Object
* @return Object
*/
public static Object getFormatData(Object value) {
if (value instanceof Map) {
return OvsdbMap.ovsdbMap((Map) value);
} else if (value instanceof Set) {
return OvsdbSet.ovsdbSet((Set) value);
} else {
return value;
}
}
/**
* Transform JsonNode to corresponding value.
* @param json the ColumnType JsonNode
* @param columnType AtomicColumnType or KeyValuedColumnType
* @return Object OvsdbMap or OvsdbSet
*/
public static Object getValueFromJson(JsonNode json, ColumnType columnType) {
if (columnType instanceof AtomicColumnType) {
AtomicColumnType atoType = (AtomicColumnType) columnType;
return getValueFromAtoType(json, atoType);
} else if (columnType instanceof KeyValuedColumnType) {
KeyValuedColumnType kvType = (KeyValuedColumnType) columnType;
return getValueFromKvType(json, kvType);
}
return null;
}
/**
* Convert AtomicColumnType JsonNode into OvsdbSet value.
* @param json AtomicColumnType JsonNode
* @param atoType AtomicColumnType entity
* @return Object OvsdbSet or the value of JsonNode
*/
private static Object getValueFromAtoType(JsonNode json, AtomicColumnType atoType) {
BaseType baseType = atoType.baseType();
// If "min" or "max" is not specified, If "min" is not 1 or "max" is not
// 1, or both, and "value" is not specified, the type is a set of scalar
// type "key". Refer to RFC 7047, Section 3.2 .
if (atoType.min() != atoType.max()) {
Set set = Sets.newHashSet();
if (json.isArray()) {
if (json.size() == 2) {
if (json.get(0).isTextual() && "set".equals(json.get(0).asText())) {
for (JsonNode node : json.get(1)) {
set.add(transToValue(node, baseType));
}
} else {
set.add(transToValue(json, baseType));
}
}
} else {
set.add(transToValue(json, baseType));
}
return OvsdbSet.ovsdbSet(set);
} else {
return transToValue(json, baseType);
}
}
/**
* Convert KeyValuedColumnType JsonNode into OvsdbMap value.
* @param json KeyValuedColumnType JsonNode
* @param kvType KeyValuedColumnType entity
* @return Object OvsdbMap
*/
private static Object getValueFromKvType(JsonNode json, KeyValuedColumnType kvType) {
if (json.isArray()) {
if (json.size() == 2) {
if (json.get(0).isTextual() && "map".equals(json.get(0).asText())) {
Map map = Maps.newHashMap();
for (JsonNode pairNode : json.get(1)) {
if (pairNode.isArray() && json.size() == 2) {
Object key = transToValue(pairNode.get(0), kvType.keyType());
Object value = transToValue(pairNode.get(1), kvType.valueType());
map.put(key, value);
}
}
return OvsdbMap.ovsdbMap(map);
}
}
}
return null;
}
/**
* convert into value.
* @param valueNode the BaseType JsonNode
* @param baseType BooleanBaseType or IntegerBaseType or RealBaseType or
* StringBaseType or UuidBaseType
* @return Object the value of JsonNode
*/
public static Object transToValue(JsonNode valueNode, BaseType baseType) {
if (baseType instanceof BooleanBaseType) {
return valueNode.asBoolean();
} else if (baseType instanceof IntegerBaseType) {
return valueNode.asInt();
} else if (baseType instanceof RealBaseType) {
return valueNode.asDouble();
} else if (baseType instanceof StringBaseType) {
return valueNode.asText();
} else if (baseType instanceof UuidBaseType) {
if (valueNode.isArray()) {
if (valueNode.size() == 2) {
if (valueNode.get(0).isTextual()
&& ("uuid".equals(valueNode.get(0).asText()) || "named-uuid"
.equals(valueNode.get(0).asText()))) {
return Uuid.uuid(valueNode.get(1).asText());
}
}
} else {
return new RefTableRow(((UuidBaseType) baseType).getRefTable(), valueNode);
}
}
return null;
}
}
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