Example usage for com.mongodb Function Function

Introduction

In this page you can find the example usage for com.mongodb Function Function.

Prototype

Function

Source Link

Usage

From source file:org.apache.eagle.alert.metadata.impl.MongoMetadataDaoImpl.java

License:Apache License

@Override
public ScheduleState getScheduleState(String versionId) {
    BsonDocument doc = new BsonDocument();
    doc.append("version", new BsonString(versionId));
    ScheduleState state = scheduleStates.find(doc).map(new Function<Document, ScheduleState>() {
        @Override//w  w w  .  j a v a2s .  co m
        public ScheduleState apply(Document t) {
            String json = t.toJson();
            try {
                return mapper.readValue(json, ScheduleState.class);
            } catch (IOException e) {
                LOG.error("deserialize config item failed!", e);
            }
            return null;
        }
    }).first();

    if (state != null) {
        // based on version, to add content from collections of spoutSpecs/alertSpecs/etc..
        state = addDetailForScheduleState(state, versionId);
    }

    return state;
}

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From source file:org.apache.eagle.alert.metadata.impl.MongoMetadataDaoImpl.java

License:Apache License

/**
 * get the basic ScheduleState, and then based on the version to get all sub-part(spoutSpecs/alertSpecs/etc)
 * to form a completed ScheduleState./* w  w  w .j a v a 2  s.  co m*/
 * @return the latest ScheduleState
 */
@Override
public ScheduleState getScheduleState() {
    BsonDocument sort = new BsonDocument();
    sort.append("generateTime", new BsonInt32(-1));
    ScheduleState state = scheduleStates.find().sort(sort).map(new Function<Document, ScheduleState>() {
        @Override
        public ScheduleState apply(Document t) {
            String json = t.toJson();
            try {
                return mapper.readValue(json, ScheduleState.class);
            } catch (IOException e) {
                LOG.error("deserialize config item failed!", e);
            }
            return null;
        }
    }).first();

    if (state != null) {
        String version = state.getVersion();
        // based on version, to add content from collections of spoutSpecs/alertSpecs/etc..
        state = addDetailForScheduleState(state, version);
    }

    return state;
}

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From source file:org.apache.eagle.alert.metadata.impl.MongoMetadataDaoImpl.java

License:Apache License

private <T> List<T> list(MongoCollection<Document> collection, Class<T> clz, String version) {
    BsonDocument doc = new BsonDocument();
    doc.append("version", new BsonString(version));

    List<T> result = new LinkedList<T>();
    collection.find(doc).map(new Function<Document, T>() {
        @Override//from   w  w w. j a v a  2 s .  co  m
        public T apply(Document t) {
            String json = t.toJson();
            try {
                return mapper.readValue(json, clz);
            } catch (IOException e) {
                LOG.error("deserialize config item failed!", e);
            }
            return null;
        }
    }).into(result);
    return result;
}

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From source file:org.apache.eagle.alert.metadata.impl.MongoMetadataDaoImpl.java

License:Apache License

private <T> List<T> list(MongoCollection<Document> collection, Class<T> clz) {
    List<T> result = new LinkedList<T>();
    collection.find().map(new Function<Document, T>() {
        @Override//  w w  w  . j  a  v  a  2s . c o m
        public T apply(Document t) {
            String json = t.toJson();
            try {
                return mapper.readValue(json, clz);
            } catch (IOException e) {
                LOG.error("deserialize config item failed!", e);
            }
            return null;
        }
    }).into(result);
    return result;
}

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