Chapter 2    Object Management

This chapter covers the following topics.

• Overview

• JADE Object Handling

• JADE Object Caches

• JADE Object Concurrency Management

  • Distributed Processing Architecture

• Maintaining Data Consistency and Coherence

  • Data Consistency

  • Data Coherence

  • Automatic Cache Coherency

  • The Transaction Model

  • Object Locking Overview

• JADE Object Locking

  • Lock Types

  • Lock Type Compatibility

  • Lock Duration

  • Lock Timeout

  • Lock Kind

  • Explicit Locking and Unlocking

  • Implicit Locking and Unlocking

  • Load State

  • Upgrading and Downgrading Locks

  • Collection Locking

  • Deadlocks

  • Exceptions

• Object Volatility

  • Volatile Objects

  • Stable Objects

  • Frozen Objects

• Specifying and Changing Object Volatility

  • Class Volatility

  • Individual Object Volatility

• Frozen Files and Partitions

  • Freezing User Schema Files

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