org.apache.nifi.util

Class SnippetUtils

java.lang.Object

org.apache.nifi.util.SnippetUtils

public final class SnippetUtils
extends Object

Utility class for moving Snippets.

Constructor Summary

Constructors

Constructor and Description
SnippetUtils()

Method Summary

Modifier and Type	Method and Description
private static void	applyUpdatedPositions(Map<org.apache.nifi.web.api.dto.ComponentDTO,org.apache.nifi.web.api.dto.PositionDTO> componentPositionLookup, Map<org.apache.nifi.web.api.dto.ConnectionDTO,List<org.apache.nifi.web.api.dto.PositionDTO>> connectionPositionLookup) Applies the updated positions to the corresponding components.
static List<org.apache.nifi.web.api.dto.ProcessGroupDTO>	findAllProcessGroups(org.apache.nifi.web.api.dto.FlowSnippetDTO snippet) Finds all ProcessGroupDTOs in the given FlowSnippetDTO.
private static void	findAllVersionControlInfo(org.apache.nifi.web.api.dto.ProcessGroupDTO dto, List<org.apache.nifi.web.api.dto.VersionControlInformationDTO> found)
private static void	findAllVersionControlInfo(ProcessGroup group, List<VersionControlInformation> found)
private static Collection<org.apache.nifi.web.api.dto.ComponentDTO>	getComponents(org.apache.nifi.web.api.dto.FlowSnippetDTO contents) Gets all components, but not connections, that are part of the specified template.
private static Map<org.apache.nifi.web.api.dto.ConnectionDTO,List<org.apache.nifi.web.api.dto.PositionDTO>>	getConnectionPositionLookup(Collection<org.apache.nifi.web.api.dto.ConnectionDTO> connections) Builds a mapping of components to PositionDTO's.
private static Collection<org.apache.nifi.web.api.dto.ConnectionDTO>	getConnections(org.apache.nifi.web.api.dto.FlowSnippetDTO contents) Gets all connections that are part of the specified template.
private static org.apache.nifi.web.api.dto.PositionDTO	getOrigin(Collection<org.apache.nifi.web.api.dto.PositionDTO> componentPositions, Collection<List<org.apache.nifi.web.api.dto.PositionDTO>> connectionPositions) Gets the origin of the bounding box of all specified component positions
private static Map<org.apache.nifi.web.api.dto.ComponentDTO,org.apache.nifi.web.api.dto.PositionDTO>	getPositionLookup(Collection<org.apache.nifi.web.api.dto.ComponentDTO> components) Builds a mapping of components to PositionDTO's.
static void	moveAndScaleSnippet(org.apache.nifi.web.api.dto.FlowSnippetDTO snippet, Double x, Double y, double factorX, double factorY) Moves the content of the specified snippet around the specified location and scales the placement of individual components of the template by the given factorX and factorY.
static void	moveSnippet(org.apache.nifi.web.api.dto.FlowSnippetDTO snippet, Double x, Double y) Moves the content of the specified snippet around the specified location.
static void	scaleSnippet(org.apache.nifi.web.api.dto.FlowSnippetDTO snippet, double factorX, double factorY) Scales the placement of individual components of the snippet by the given factorX and factorY.
private static void	verifyNoDuplicateVersionControlInfo(ProcessGroup group, Collection<VersionControlInformation> snippetVcis)
private static void	verifyNoDuplicateVersionControlInfoDtos(ProcessGroup group, Collection<org.apache.nifi.web.api.dto.VersionControlInformationDTO> snippetVcis)
static void	verifyNoVersionControlConflicts(org.apache.nifi.web.api.dto.FlowSnippetDTO snippetContents, ProcessGroup destination)
static void	verifyNoVersionControlConflicts(Snippet snippet, ProcessGroup parentGroup, ProcessGroup destination)

Methods inherited from class java.lang.Object

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

Constructor Detail

SnippetUtils

public SnippetUtils()

Method Detail

moveSnippet

public static void moveSnippet(org.apache.nifi.web.api.dto.FlowSnippetDTO snippet,
                               Double x,
                               Double y)

Moves the content of the specified snippet around the specified location. Does not scale components in child process groups.

Parameters:

snippet - snippet

x - x location

y - y location

moveAndScaleSnippet

public static void moveAndScaleSnippet(org.apache.nifi.web.api.dto.FlowSnippetDTO snippet,
                                       Double x,
                                       Double y,
                                       double factorX,
                                       double factorY)

Moves the content of the specified snippet around the specified location and scales the placement of individual components of the template by the given factorX and factorY. Does not scale components in child process groups.

Parameters:

snippet - snippet

x - x location

y - y location

factorX - x location scaling factor

factorY - y location scaling factor

scaleSnippet

public static void scaleSnippet(org.apache.nifi.web.api.dto.FlowSnippetDTO snippet,
                                double factorX,
                                double factorY)

Scales the placement of individual components of the snippet by the given factorX and factorY. Does not scale components in child process groups.

Parameters:

snippet - snippet

factorX - x location scaling factor

factorY - y location scaling factor

findAllProcessGroups

public static List<org.apache.nifi.web.api.dto.ProcessGroupDTO> findAllProcessGroups(org.apache.nifi.web.api.dto.FlowSnippetDTO snippet)

Finds all ProcessGroupDTOs in the given FlowSnippetDTO.

Parameters:

snippet - containing the child ProcessGroupDTOs to be returned

Returns:

List of child ProcessGroupDTOs found in the given FlowSnippetDTO.

getConnections

private static Collection<org.apache.nifi.web.api.dto.ConnectionDTO> getConnections(org.apache.nifi.web.api.dto.FlowSnippetDTO contents)

Gets all connections that are part of the specified template.

Parameters:

contents - snippet content

Returns:

connection dtos

getComponents

private static Collection<org.apache.nifi.web.api.dto.ComponentDTO> getComponents(org.apache.nifi.web.api.dto.FlowSnippetDTO contents)

Gets all components, but not connections, that are part of the specified template.

Parameters:

contents - snippet

Returns:

component dtos

getPositionLookup

private static Map<org.apache.nifi.web.api.dto.ComponentDTO,org.apache.nifi.web.api.dto.PositionDTO> getPositionLookup(Collection<org.apache.nifi.web.api.dto.ComponentDTO> components)

Builds a mapping of components to PositionDTO's.

Parameters:

components - components

Returns:

component and position map

getConnectionPositionLookup

private static Map<org.apache.nifi.web.api.dto.ConnectionDTO,List<org.apache.nifi.web.api.dto.PositionDTO>> getConnectionPositionLookup(Collection<org.apache.nifi.web.api.dto.ConnectionDTO> connections)

Builds a mapping of components to PositionDTO's.

Parameters:

connections - connections

Returns:

position of connections map

getOrigin

private static org.apache.nifi.web.api.dto.PositionDTO getOrigin(Collection<org.apache.nifi.web.api.dto.PositionDTO> componentPositions,
                                                                 Collection<List<org.apache.nifi.web.api.dto.PositionDTO>> connectionPositions)

Gets the origin of the bounding box of all specified component positions

Parameters:

componentPositions - position list for components

connectionPositions - position list for connections

Returns:

position

applyUpdatedPositions

private static void applyUpdatedPositions(Map<org.apache.nifi.web.api.dto.ComponentDTO,org.apache.nifi.web.api.dto.PositionDTO> componentPositionLookup,
                                          Map<org.apache.nifi.web.api.dto.ConnectionDTO,List<org.apache.nifi.web.api.dto.PositionDTO>> connectionPositionLookup)

Applies the updated positions to the corresponding components.

Parameters:

componentPositionLookup - lookup

connectionPositionLookup - lookup

verifyNoVersionControlConflicts

public static void verifyNoVersionControlConflicts(Snippet snippet,
                                                   ProcessGroup parentGroup,
                                                   ProcessGroup destination)

verifyNoVersionControlConflicts

public static void verifyNoVersionControlConflicts(org.apache.nifi.web.api.dto.FlowSnippetDTO snippetContents,
                                                   ProcessGroup destination)

verifyNoDuplicateVersionControlInfoDtos

private static void verifyNoDuplicateVersionControlInfoDtos(ProcessGroup group,
                                                            Collection<org.apache.nifi.web.api.dto.VersionControlInformationDTO> snippetVcis)

verifyNoDuplicateVersionControlInfo

private static void verifyNoDuplicateVersionControlInfo(ProcessGroup group,
                                                        Collection<VersionControlInformation> snippetVcis)

findAllVersionControlInfo

private static void findAllVersionControlInfo(org.apache.nifi.web.api.dto.ProcessGroupDTO dto,
                                              List<org.apache.nifi.web.api.dto.VersionControlInformationDTO> found)

findAllVersionControlInfo

private static void findAllVersionControlInfo(ProcessGroup group,
                                              List<VersionControlInformation> found)