Package org.pentaho.di.base

Class MetaFileLoaderImpl<T>

java.lang.Object

org.pentaho.di.base.MetaFileLoaderImpl<T>

Type Parameters:

T - Either a TransMeta or JobMeta

All Implemented Interfaces:

IMetaFileLoader<T>

public class MetaFileLoaderImpl<T>
extends Object
implements IMetaFileLoader<T>

Unit tests for this class can be found in JobExecutorMetaTest, StepWithMetaMetaTest, JobEntryJobTest, and JobEntryTransTest. This class attempts to consolidate and refactor to some extent, the logic that was originally present in these four classes and moved here. This allowed the fileMetaCache to implemented without repeating code over these 4 classes. Due to the divergence over time of the 4 original classes, there is still some significant differences with meta load logic that was beyond the scope of this case to analyze.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	KJB
static final String	KTR

Constructor Summary

Constructors

Constructor	Description
MetaFileLoaderImpl(JobEntryBase jobEntryBase, org.pentaho.di.core.ObjectLocationSpecificationMethod specificationMethod)
MetaFileLoaderImpl(BaseStepMeta baseStepMeta, org.pentaho.di.core.ObjectLocationSpecificationMethod specificationMethod)

Method Summary

Modifier and Type	Method	Description
T	getMetaForEntry(Repository rep, org.pentaho.metastore.api.IMetaStore metaStore, org.pentaho.di.core.variables.VariableSpace space)	Get a JobMeta or TransMeta object for a job entry that needs it.
T	getMetaForStep(Repository rep, org.pentaho.metastore.api.IMetaStore metaStore, org.pentaho.di.core.variables.VariableSpace space)	Get a JobMeta or TransMeta object for a transformation step for a Transformation that needs it.

Methods inherited from class java.lang.Object

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

Field Details

KJB

public static final String KJB

See Also:

• Constant Field Values

KTR

public static final String KTR

See Also:

• Constant Field Values

Constructor Details

MetaFileLoaderImpl

public MetaFileLoaderImpl(JobEntryBase jobEntryBase,
 org.pentaho.di.core.ObjectLocationSpecificationMethod specificationMethod)

Parameters:

jobEntryBase - either a JobEntryTrans or JobEntryJob Object

specificationMethod -

MetaFileLoaderImpl

public MetaFileLoaderImpl(BaseStepMeta baseStepMeta,
 org.pentaho.di.core.ObjectLocationSpecificationMethod specificationMethod)

Parameters:

baseStepMeta - either a StepWithMappingMeta or JobExecutorMeta Object (BaseStepMeta is a shared subclass )

specificationMethod -

Method Details

getMetaForEntry

public T getMetaForEntry(Repository rep,
 org.pentaho.metastore.api.IMetaStore metaStore,
 org.pentaho.di.core.variables.VariableSpace space)
                  throws org.pentaho.di.core.exception.KettleException

Description copied from interface: IMetaFileLoader

Get a JobMeta or TransMeta object for a job entry that needs it. The entry will be cached and further loads will come from the cache, instead.

Specified by:

getMetaForEntry in interface IMetaFileLoader<T>

Parameters:

rep - The repo in play if not using the filesystem

metaStore - The metastore

space - The variables for substitution

Returns:

A JobMeta or TransMeta (T)

Throws:

org.pentaho.di.core.exception.KettleException

getMetaForStep

public T getMetaForStep(Repository rep,
 org.pentaho.metastore.api.IMetaStore metaStore,
 org.pentaho.di.core.variables.VariableSpace space)
                 throws org.pentaho.di.core.exception.KettleException

Description copied from interface: IMetaFileLoader

Get a JobMeta or TransMeta object for a transformation step for a Transformation that needs it. The entry will be cached and further loads will come from the cache, instead.

Specified by:

getMetaForStep in interface IMetaFileLoader<T>

Parameters:

rep - The repo in play if not using the filesystem

metaStore - The metastore

space - The variables for substitution

Returns:

A JobMeta or TransMeta (T)

Throws:

org.pentaho.di.core.exception.KettleException