org.apache.drill.exec.ops

Class BaseFragmentContext

java.lang.Object

org.apache.drill.exec.ops.BaseFragmentContext

All Implemented Interfaces:

FragmentContextInterface

Direct Known Subclasses:

FragmentContext

public abstract class BaseFragmentContext
extends Object
implements FragmentContextInterface

Common implementation for both the test and production versions of the fragment context.

Constructor Summary

Constructors

Constructor and Description
BaseFragmentContext(FunctionImplementationRegistry funcRegistry)

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract BufferManager	getBufferManager()
protected abstract CodeCompiler	getCompiler()
FunctionImplementationRegistry	getFunctionRegistry() Returns the UDF registry.
<T> T	getImplementationClass(ClassGenerator<T> cg) Generates code for a class given a ClassGenerator, and returns a single instance of the generated class.
<T> List<T>	getImplementationClass(ClassGenerator<T> cg, int instanceCount) Generates code for a class given a ClassGenerator, and returns the specified number of instances of the generated class.
<T> T	getImplementationClass(CodeGenerator<T> cg) Generates code for a class given a CodeGenerator, and returns a single instance of the generated class.
<T> List<T>	getImplementationClass(CodeGenerator<T> cg, int instanceCount) Generates code for a class given a CodeGenerator, and returns the specified number of instances of the generated class.
DrillBuf	getManagedBuffer()
DrillBuf	getManagedBuffer(int size)
DrillBuf	replace(DrillBuf old, int newSize)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.drill.exec.ops.FragmentContextInterface

getConfig, getDrillbitContext, getExecutionControls, getOptionSet, shouldContinue

Constructor Detail

BaseFragmentContext

public BaseFragmentContext(FunctionImplementationRegistry funcRegistry)

Method Detail

getFunctionRegistry

public FunctionImplementationRegistry getFunctionRegistry()

Description copied from interface: FragmentContextInterface

Returns the UDF registry.

Specified by:

getFunctionRegistry in interface FragmentContextInterface

Returns:

the UDF registry

getCompiler

protected abstract CodeCompiler getCompiler()

getImplementationClass

public <T> T getImplementationClass(ClassGenerator<T> cg)
                         throws ClassTransformationException,
                                IOException

Description copied from interface: FragmentContextInterface

Generates code for a class given a ClassGenerator, and returns a single instance of the generated class. (Note that the name is a misnomer, it would be better called getImplementationInstance.)

Specified by:

getImplementationClass in interface FragmentContextInterface

Parameters:

cg - the class generator

Returns:

an instance of the generated class

Throws:

ClassTransformationException

IOException

getImplementationClass

public <T> T getImplementationClass(CodeGenerator<T> cg)
                         throws ClassTransformationException,
                                IOException

Description copied from interface: FragmentContextInterface

Generates code for a class given a CodeGenerator, and returns a single instance of the generated class. (Note that the name is a misnomer, it would be better called getImplementationInstance.)

Specified by:

getImplementationClass in interface FragmentContextInterface

Parameters:

cg - the code generator

Returns:

an instance of the generated class

Throws:

ClassTransformationException

IOException

getImplementationClass

public <T> List<T> getImplementationClass(ClassGenerator<T> cg,
                                 int instanceCount)
                               throws ClassTransformationException,
                                      IOException

Description copied from interface: FragmentContextInterface

Generates code for a class given a ClassGenerator, and returns the specified number of instances of the generated class. (Note that the name is a misnomer, it would be better called getImplementationInstances.)

Specified by:

getImplementationClass in interface FragmentContextInterface

Parameters:

cg - the class generator

Returns:

list of instances of the generated class

Throws:

ClassTransformationException

IOException

getImplementationClass

public <T> List<T> getImplementationClass(CodeGenerator<T> cg,
                                 int instanceCount)
                               throws ClassTransformationException,
                                      IOException

Description copied from interface: FragmentContextInterface

Generates code for a class given a CodeGenerator, and returns the specified number of instances of the generated class. (Note that the name is a misnomer, it would be better called getImplementationInstances.)

Specified by:

getImplementationClass in interface FragmentContextInterface

Parameters:

cg - the code generator

Returns:

list of instances of the generated class

Throws:

ClassTransformationException

IOException

getBufferManager

protected abstract BufferManager getBufferManager()

replace

public DrillBuf replace(DrillBuf old,
               int newSize)

Specified by:

replace in interface FragmentContextInterface

getManagedBuffer

public DrillBuf getManagedBuffer()

Specified by:

getManagedBuffer in interface FragmentContextInterface

getManagedBuffer

public DrillBuf getManagedBuffer(int size)

Specified by:

getManagedBuffer in interface FragmentContextInterface