org.apache.ambari.server.api.query.render

Class DefaultRenderer

java.lang.Object

org.apache.ambari.server.api.query.render.BaseRenderer

org.apache.ambari.server.api.query.render.DefaultRenderer

All Implemented Interfaces:

Renderer

Direct Known Subclasses:

HostKerberosIdentityCsvRenderer, MetricsPaddingRenderer

public class DefaultRenderer
extends BaseRenderer
implements Renderer

Default resource renderer. Provides the default "native" rendering for all resources.

Constructor Summary

Constructors

Constructor and Description
DefaultRenderer()

Method Summary

Modifier and Type	Method and Description
TreeNode<Set<String>>	finalizeProperties(TreeNode<QueryInfo> queryTree, boolean isCollection) Finalize which properties are requested by the query.
Result	finalizeResult(Result queryResult) Finalize the query results.
ResultPostProcessor	getResultPostProcessor(Request request) Obtain the associated post processor.

Methods inherited from class org.apache.ambari.server.api.query.render.BaseRenderer

addKeys, addPrimaryKey, addSubResources, copyPropertiesToResult, ensureRequiredProperties, getSchema, init, isRequestWithNoProperties, populateSubResourceDefaults, requiresPropertyProviderInput

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.api.query.render.Renderer

init, requiresPropertyProviderInput

Constructor Detail

DefaultRenderer

public DefaultRenderer()

Method Detail

finalizeProperties

public TreeNode<Set<String>> finalizeProperties(TreeNode<QueryInfo> queryTree,
                                                boolean isCollection)

Description copied from interface: Renderer

Finalize which properties are requested by the query. This is called once per user query regardless of how many sub-queries the original query is decomposed into.

Specified by:

finalizeProperties in interface Renderer

Parameters:

queryTree - tree of query information. Contains query information for the root query and all sub-queries (children)

isCollection - whether the query is a collection

Returns:

tree of sets of string properties for each query including any sub-queries

getResultPostProcessor

public ResultPostProcessor getResultPostProcessor(Request request)

Description copied from interface: Renderer

Obtain the associated post processor. Post Processors existed prior to renderer's to allow the native result to be augmented before returning it to the user. This functionality should be merged into the renderer.

Specified by:

getResultPostProcessor in interface Renderer

Parameters:

request - original request

Returns:

associated post processor

finalizeResult

public Result finalizeResult(Result queryResult)

Description copied from interface: Renderer

Finalize the query results.

Specified by:

finalizeResult in interface Renderer

Parameters:

queryResult - result of query in native (default) format

Returns:

result in the format dictated by the renderer