com.effektif.mongo.MongoHelper.java Source code

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Here is the source code for com.effektif.mongo.MongoHelper.java

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/*
 * Copyright 2014 Effektif GmbH.
 *
 * 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 com.effektif.mongo;

import com.effektif.workflow.api.model.Id;
import com.effektif.workflow.api.model.WorkflowId;
import com.effektif.workflow.api.model.WorkflowInstanceId;
import com.mongodb.BasicDBObject;
import com.mongodb.DBObject;
import org.bson.types.ObjectId;
import org.joda.time.LocalDateTime;

import java.util.*;

public abstract class MongoHelper {

    public static void writeId(Map<String, Object> o, String fieldName, String value) {
        o.put(fieldName, new ObjectId(value));
    }

    public static void writeId(Map<String, Object> o, String fieldName, Id value) {
        o.put(fieldName, new ObjectId(value.toString()));
    }

    public static void writeIdOpt(Map<String, Object> o, String fieldName, String value) {
        if (value != null) {
            o.put(fieldName, new ObjectId(value));
        }
    }

    public static void writeIdOptNew(Map<String, Object> o, String fieldName, Id id) {
        if (id != null) {
            o.put(fieldName, new ObjectId(id.getInternal()));
        }
    }

    public static void writeString(Map<String, Object> o, String fieldName, Object value) {
        writeObject(o, fieldName, value);
    }

    public static void writeStringOpt(Map<String, Object> o, String fieldName, String value) {
        writeObjectOpt(o, fieldName, value);
    }

    public static void writeLongOpt(Map<String, Object> o, String fieldName, Long value) {
        writeObjectOpt(o, fieldName, value);
    }

    public static void writeBooleanOpt(Map<String, Object> o, String fieldName, Object value) {
        writeObjectOpt(o, fieldName, value);
    }

    public static void writeObject(Map<String, Object> o, String fieldName, Object value) {
        o.put(fieldName, value);
    }

    public static void writeObjectOpt(Map<String, Object> o, String fieldName, Object value) {
        if (value != null) {
            o.put(fieldName, value);
        }
    }

    public static void writeTimeOpt(Map<String, Object> o, String fieldName, LocalDateTime value) {
        if (value != null) {
            o.put(fieldName, value.toDate());
        }
    }

    public static void writeListElementOpt(Map<String, Object> o, String fieldName, Object element) {
        if (element != null) {
            @SuppressWarnings("unchecked")
            List<Object> list = (List<Object>) o.get(fieldName);
            if (list == null) {
                list = new ArrayList<>();
                o.put(fieldName, list);
            }
            list.add(element);
        }
    }

    @SuppressWarnings("unchecked")
    public static List<BasicDBObject> readList(BasicDBObject dbScope, String fieldName) {
        return (List<BasicDBObject>) dbScope.get(fieldName);
    }

    public static Object readObject(BasicDBObject dbObject, String fieldName) {
        return dbObject.get(fieldName);
    }

    public static BasicDBObject readBasicDBObject(BasicDBObject dbObject, String fieldName) {
        return (BasicDBObject) dbObject.get(fieldName);
    }

    public static String readId(BasicDBObject dbObject, String fieldName) {
        Object value = dbObject.get(fieldName);
        return value != null ? value.toString() : null;
    }

    @SuppressWarnings("unchecked")
    public static Map<String, Object> readObjectMap(BasicDBObject dbObject, String fieldName) {
        return (Map<String, Object>) dbObject.get(fieldName);
    }

    public static String readString(BasicDBObject dbObject, String fieldName) {
        return (String) dbObject.get(fieldName);
    }

    public static WorkflowId readWorkflowId(BasicDBObject dbObject, String fieldName) {
        Object oid = dbObject.get(fieldName);
        return oid != null ? new WorkflowId(oid.toString()) : null;
    }

    public static WorkflowInstanceId readWorkflowInstanceId(BasicDBObject dbObject, String fieldName) {
        Object oid = dbObject.get(fieldName);
        return oid != null ? new WorkflowInstanceId(oid.toString()) : null;
    }

    public static Long readLong(BasicDBObject dbObject, String fieldName) {
        Object object = dbObject.get(fieldName);
        if (object == null) {
            return null;
        }
        if (object instanceof Long) {
            return (Long) object;
        }
        return ((Number) object).longValue();
    }

    public static Boolean readBoolean(BasicDBObject dbObject, String fieldName) {
        return (Boolean) dbObject.get(fieldName);
    }

    public static LocalDateTime readTime(BasicDBObject dbObject, String fieldName) {
        Object object = dbObject.get(fieldName);
        if (object == null) {
            return null;
        }
        if (object instanceof Date) {
            return new LocalDateTime((Date) object);
        }
        throw new RuntimeException("date conversion problem: " + object + " (" + object.getClass().getName() + ")");
    }

    public static ObjectId toObjectId(Id id) {
        if (id != null) {
            String idString = id.getInternal();
            if (idString != null) {
                return new ObjectId(idString);
            }
        }
        return null;
    }

    public static Map<String, Object> toMap(DBObject dbObject) {
        if (dbObject == null) {
            return null;
        }
        Map<String, Object> map = new HashMap<>();
        for (String key : dbObject.keySet()) {
            Object value = dbObject.get(key);
            if (value instanceof DBObject) {
                value = toMap((DBObject) value);
            }
            map.put(key, value);
        }
        return map;
    }

    public static ObjectId toObjectId(Object id) {
        if (id == null) {
            return null;
        }
        if (id instanceof ObjectId) {
            return (ObjectId) id;
        }
        if (id instanceof String) {
            return new ObjectId((String) id);
        }
        return null;
    }
}