Java Code Examples for com.hazelcast.function.FunctionEx#apply()

The following examples show how to use com.hazelcast.function.FunctionEx#apply() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: MongoDBSourceBuilder.java    From hazelcast-jet-contrib with Apache License 2.0 6 votes vote down vote up 
private static <T, U> SupplierEx<StreamContext<T, U>> contextFn(
        SupplierEx<? extends MongoClient> connectionSupplier,
        FunctionEx<? super MongoClient, ? extends MongoDatabase> databaseFn,
        FunctionEx<? super MongoDatabase, ? extends MongoCollection<? extends T>> collectionFn,
        ConsumerEx<? super MongoClient> destroyFn,
        FunctionEx<? super MongoCollection<? extends T>, ? extends ChangeStreamIterable<? extends T>> searchFn,
        FunctionEx<? super ChangeStreamDocument<? extends T>, U> mapFn,
        FunctionEx<? super MongoClient, ? extends BsonTimestamp> startAtOperationTimeFn

) {
    return () -> {
        MongoClient client = connectionSupplier.get();
        MongoDatabase database = databaseFn.apply(client);
        MongoCollection<? extends T> collection = collectionFn.apply(database);
        ChangeStreamIterable<? extends T> changeStreamIterable = searchFn.apply(collection);
        return new StreamContext<>(client, changeStreamIterable, mapFn, destroyFn, startAtOperationTimeFn);
    };
}
Example 2
Source File: MongoDBSourceBuilder.java    From hazelcast-jet-contrib with Apache License 2.0 5 votes vote down vote up 
private static <T, U> SupplierEx<StreamContext<T, U>> contextFn(
        SupplierEx<? extends MongoClient> connectionSupplier,
        FunctionEx<? super MongoClient, ? extends MongoDatabase> databaseFn,
        ConsumerEx<? super MongoClient> destroyFn,
        FunctionEx<? super MongoDatabase, ? extends ChangeStreamIterable<? extends T>> searchFn,
        FunctionEx<? super ChangeStreamDocument<? extends T>, U> mapFn,
        FunctionEx<? super MongoClient, ? extends BsonTimestamp> startAtOperationTimeFn
) {
    return () -> {
        MongoClient client = connectionSupplier.get();
        MongoDatabase database = databaseFn.apply(client);
        ChangeStreamIterable<? extends T> changeStreamIterable = searchFn.apply(database);
        return new StreamContext<>(client, changeStreamIterable, mapFn, destroyFn, startAtOperationTimeFn);
    };
}
Example 3
Source File: MongoDBSourceBuilder.java    From hazelcast-jet-contrib with Apache License 2.0 5 votes vote down vote up 
private static <T, U> SupplierEx<StreamContext<T, U>> contextFn(
        SupplierEx<? extends MongoClient> connectionSupplier,
        ConsumerEx<? super MongoClient> destroyFn,
        FunctionEx<? super MongoClient, ? extends ChangeStreamIterable<? extends T>> searchFn,
        FunctionEx<? super ChangeStreamDocument<? extends T>, U> mapFn,
        FunctionEx<? super MongoClient, ? extends BsonTimestamp> startAtOperationTimeFn
) {
    return () -> {
        MongoClient client = connectionSupplier.get();
        ChangeStreamIterable<? extends T> changeStreamIterable = searchFn.apply(client);
        return new StreamContext<>(client, changeStreamIterable, mapFn, destroyFn, startAtOperationTimeFn);
    };
}
Example 4
Source File: MongoDBSourceBuilder.java    From hazelcast-jet-contrib with Apache License 2.0 5 votes vote down vote up 
StreamContext(
        MongoClient client,
        ChangeStreamIterable<? extends T> changeStreamIterable,
        FunctionEx<? super ChangeStreamDocument<? extends T>, U> mapFn,
        ConsumerEx<? super MongoClient> destroyFn,
        FunctionEx<? super MongoClient, ? extends BsonTimestamp> startAtOperationTimeFn
) {
    this.client = client;
    this.changeStreamIterable = changeStreamIterable;
    this.mapFn = mapFn;
    this.destroyFn = destroyFn;

    this.timestamp = startAtOperationTimeFn == null ? null : startAtOperationTimeFn.apply(client);
}