Package org.eclipse.m2m.atl.emftvm.util

Class ExecEnvPool

java.lang.Object
org.eclipse.m2m.atl.emftvm.util.ExecEnvPool
public class ExecEnvPool extends Object
Pool of reusable ExecEnvs.

  • Constructor Details

    • ExecEnvPool

      public ExecEnvPool()

  • Method Details

    • registerMetaModel

      public void registerMetaModel(String name, Metamodel metamodel)
      Registers metamodel under name.
      Parameters:
      name - the name under which to register
      metamodel - the metamodel to register
      Throws:
      IllegalStateException - if getExecEnv() has already been called on this pool

    • loadModule

      public void loadModule(String name)
      Loads the module with the given name and its imports closure, and registers its contents for execution.
      Parameters:
      name - the module name
      Throws:
      IllegalStateException - if getExecEnv() has already been called on this pool

    • getExecEnv

      public ExecEnv getExecEnv()
      Returns the first available ExecEnv instance from this pool. Creates a new instance if necessary.
      Returns:
      the first available ExecEnv instance from this pool

    • returnExecEnv

      public void returnExecEnv(ExecEnv env)
      Returns env to this pool. env must have been created by this pool.
      Parameters:
      env - the ExecEnv to return to this pool
      Throws:
      IllegalArgumentException - if env was not created by this pool

    • isFrozen

      public boolean isFrozen()
      Returns whether this ExecEnvPool has been frozen, i.e. no new metamodels or modules can be loaded.
      Returns:
      whether this ExecEnvPool has been frozen, i.e. no new metamodels or modules can be loaded

    • setFrozen

      protected void setFrozen(boolean frozen)
      Parameters:
      frozen - the frozen to set

    • getMetamodels

      protected Map<String,Metamodel> getMetamodels()
      Returns:
      the metamodels

    • getModuleResolverFactory

      protected ModuleResolverFactory getModuleResolverFactory()
      Returns:
      the moduleResolverFactory

    • setModuleResolverFactory

      public void setModuleResolverFactory(ModuleResolverFactory moduleResolverFactory)
      Sets the ModuleResolverFactory to use for loading modules.
      Parameters:
      moduleResolverFactory - the moduleResolverFactory to set
      Throws:
      IllegalStateException - if getExecEnv() has already been called on this pool

    • getModules

      protected List<String> getModules()
      Returns:
      the modules

    • getPool

      protected Collection<SoftReference<ExecEnv>> getPool()
      Returns the pool of all ExecEnv instances created by this ExecEnvPool.
      Returns:
      the pool

    • getFreePool

      protected Queue<SoftReference<ExecEnv>> getFreePool()
      Returns the pool of all free ExecEnv instances. Subset of getPool().
      Returns:
      the freePool