org.apache.ambari.server.controller.internal

Class AbstractJDBCResourceProvider<E extends Enum<E>>

java.lang.Object

org.apache.ambari.server.controller.internal.BaseProvider

org.apache.ambari.server.controller.internal.AbstractResourceProvider

org.apache.ambari.server.controller.internal.AbstractJDBCResourceProvider<E>

All Implemented Interfaces:

ObservableResourceProvider, ResourceProvider

Direct Known Subclasses:

JobResourceProvider, TaskAttemptResourceProvider, WorkflowResourceProvider

public abstract class AbstractJDBCResourceProvider<E extends Enum<E>>
extends AbstractResourceProvider

Abstract resource provider implementation that contains helper methods for retrieving data from a result set.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.ambari.server.controller.internal.AbstractResourceProvider

AbstractResourceProvider.Command<T>

Field Summary

Fields inherited from class org.apache.ambari.server.controller.internal.AbstractResourceProvider

keyPropertyIds, LOG, PROPERTIES_ATTRIBUTES_REGEX

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractJDBCResourceProvider(Set<String> propertyIds, Map<Resource.Type,String> keyPropertyIds) Create a new resource provider.

Method Summary

Modifier and Type	Method and Description
protected E	getDBField(String propertyId) Gets a db field corresponding to a property id.
protected abstract Map<String,E>	getDBFieldMap() Gets a map from property ids to db fields.
protected String	getDBFieldString(Set<String> requestedIds) Gets a comma-separated list of db fields corresponding to set of requested ids.
protected void	setInt(Resource resource, String propertyId, ResultSet rs, Set<String> requestedIds) Retrieves the db field corresponding to a property id from a result set as an int and sets the resulting int as a resource property.
protected void	setLong(Resource resource, String propertyId, ResultSet rs, Set<String> requestedIds) Retrieves the db field corresponding to a property id from a result set as a long and sets the resulting long as a resource property.
protected void	setString(Resource resource, String propertyId, ResultSet rs, Set<String> requestedIds) Retrieves the db field corresponding to a property id from a result set as a string and sets the resulting string as a resource property.

Methods inherited from class org.apache.ambari.server.controller.internal.AbstractResourceProvider

addObserver, createResources, getConfigurationRequests, getKeyPropertyIds, getPKPropertyIds, getPropertyMaps, getPropertyMaps, getQueryParameterValue, getRequestStatus, getRequestStatus, getRequestStatus, getResources, modifyResources, notifyCreate, notifyDelete, notifyUpdate, parseProperties, updateObservers

Methods inherited from class org.apache.ambari.server.controller.internal.BaseProvider

checkCategory, checkConfigPropertyIds, checkPropertyIds, containsArguments, getCategoryIds, getPropertyIds, getRegexEntry, getRegexGroups, getRequestPropertyIds, isPatternKey, isPropertyCategoryRequested, isPropertyEntryRequested, isPropertyRequested, setResourceProperty

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.ambari.server.controller.spi.ResourceProvider

checkPropertyIds, createResources, deleteResources, getResources, updateResources

Constructor Detail

AbstractJDBCResourceProvider

protected AbstractJDBCResourceProvider(Set<String> propertyIds,
                                       Map<Resource.Type,String> keyPropertyIds)

Create a new resource provider.

Parameters:

propertyIds - the property ids

keyPropertyIds - the key property ids

Method Detail

getDBFieldMap

protected abstract Map<String,E> getDBFieldMap()

Gets a map from property ids to db fields.

Returns:

the map from property ids to db fields.

setString

protected void setString(Resource resource,
                         String propertyId,
                         ResultSet rs,
                         Set<String> requestedIds)
                  throws SQLException

Retrieves the db field corresponding to a property id from a result set as a string and sets the resulting string as a resource property.

Parameters:

resource - resource object to set the property on

propertyId - the property id to retrieve from the result set

rs - the result set

requestedIds - the requested ids

Throws:

SQLException - if property id cannot be retrieved from the result set

setInt

protected void setInt(Resource resource,
                      String propertyId,
                      ResultSet rs,
                      Set<String> requestedIds)
               throws SQLException

Retrieves the db field corresponding to a property id from a result set as an int and sets the resulting int as a resource property.

Parameters:

resource - resource object to set the property on

propertyId - the property id to retrieve from the result set

rs - the result set

requestedIds - the requested ids

Throws:

SQLException - if property id cannot be retrieved from the result set

setLong

protected void setLong(Resource resource,
                       String propertyId,
                       ResultSet rs,
                       Set<String> requestedIds)
                throws SQLException

Retrieves the db field corresponding to a property id from a result set as a long and sets the resulting long as a resource property.

Parameters:

resource - resource object to set the property on

propertyId - the property id to retrieve from the result set

rs - the result set

requestedIds - the requested ids

Throws:

SQLException - if property id cannot be retrieved from the result set

getDBFieldString

protected String getDBFieldString(Set<String> requestedIds)

Gets a comma-separated list of db fields corresponding to set of requested ids.

Parameters:

requestedIds - the requested ids

Returns:

a comma-separated list of db fields

getDBField

protected E getDBField(String propertyId)

Gets a db field corresponding to a property id.

Parameters:

propertyId - the property id

Returns:

the db field enum value