Specialized Type Handlers

This is the manual for older MicroStream versions (Version < 5.0).

The new documentation (Version >= 5.0) is located at:

https://docs.microstream.one/

Although most types in the JDK or any other Java library will work with MicroStream, there is a bunch of specialized type handlers for the most commonly used types. They are optimized to reduce memory overhead and increase performance.

The following list describes all types for which special type handlers are implemented. All other types are analyzed generically.

Value Types

Primitive Types	All primitive types and arrays thereof
java.lang	Byte Boolean Short Character Integer Float Long Double Void Object String StringBuffer StringBuilder
java.math	BigDecimal BigInteger
java.util	Date Currency Locale OptionalInt OptionalLong OptionalDouble
java.util.regex	Pattern
java.io	File
java.nio.file	Path
java.net	InetAddress Inet4Address Inet6Address InetSocketAddress URI URL
java.sql	Date Time Timestamp

Collections

java.util	Vector* Stack* Hashtable* Properties* ArrayList* HashSet* HashMap* LinkedHashSet* LinkedHashMap* WeakHashMap LinkedList TreeMap TreeSet IdentityHashMap PriorityQueue ArrayDeque
java.util.concurrent	ConcurrentHashMap ConcurrentSkipListMap ConcurrentSkipListSet ConcurrentLinkedQueue ConcurrentLinkedDeque CopyOnWriteArrayList

*) Most collections above are handled in a generic way. If you want a more optimized version of JDK collection handlers, you can utilize the provided module persistence.binary.jdk8.

pom.xml

<repositories>
    <repository>
        <id>microstream-releases</id>
        <url>https://repo.microstream.one/repository/maven-public/</url>
    </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>one.microstream</groupId>
        <artifactId>persistence.binary.jdk8</artifactId>
        <version>04.00.00-MS-GA</version>
    </dependency>
</dependencies>

final EmbeddedStorageFoundation<?> foundation = EmbeddedStorage.Foundation();
foundation.onConnectionFoundation(BinaryHandlersJDK8::registerJDK8TypeHandlers);