WFSStrategy (Geotools modules 18-SNAPSHOT API)

Object
- Specification
- - WFSStrategy

Direct Known Subclasses:

AbstractWFSStrategy
```
public abstract class WFSStrategy
extends Specification
```
Facade interface to interact with a WFS instance.
Implementations of this interface know how to send and get information back from a WFS service for a specific protocol version, but are not meant to provide any logic other than the conversation with the service. For instance, WFSProtocol implementations are not required to transform filters to something appropriate for the service capabilities, nor any other control logic than creating and sending the requests mapping what is given to the operation methods.

This interface provides enough information extracted or derived from the WFS capabilities document as for the client code to issue requests appropriate for the server capabilities.

Constructor Summary

Constructors
Constructor and Description

WFSStrategy()

Constructors
Constructor and Description
`WFSStrategy()`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`abstract URL`	`buildUrlGET(WFSRequest request)`
`abstract void`	`dispose()` Allows to free any resource held.
`abstract List<String>`	`getClientSupportedOutputFormats(WFSOperationType operation)`
`abstract WFSConfig`	`getConfig()`
`abstract String`	`getDefaultOutputFormat(WFSOperationType operation)`
`abstract FeatureTypeInfo`	`getFeatureTypeInfo(QName typeName)` Returns the feature type metadata object parsed from the capabilities document for the given `typeName`
`abstract Set<QName>`	`getFeatureTypeNames()` Returns the set of type names as extracted from the capabilities document, including the namespace and prefix.
`abstract Map<QName,Class<?>>`	`getFieldTypeMappings()` Provide additional field type mappings
`abstract FilterCapabilities`	`getFilterCapabilities()` Returns the parsed version of the FilterCapabilities section in the capabilities document
`abstract URL`	`getOperationURL(WFSOperationType operation, HttpMethod method)` Returns the URL for the given operation name and HTTP protocol as stated in the WFS capabilities.
`abstract InputStream`	`getPostContents(WFSRequest wfsRequest)` Returns the input stream with the POST body contents for the given request.
`abstract String`	`getPostContentType(WFSRequest wfsRequest)`
`abstract Set<String>`	`getServerSupportedOutputFormats(QName typeName, WFSOperationType operation)`
`abstract Set<String>`	`getServerSupportedOutputFormats(WFSOperationType operation)`
`abstract WFSServiceInfo`	`getServiceInfo()`
`abstract Version`	`getServiceVersion()` Returns the WFS protocol version this facade talks to the WFS instance.
`abstract Set<String>`	`getSupportedCRSIdentifiers(QName typeName)` Returns the union of the default CRS and the other supported CRS's of the given feature type as declared in the corresponding FeatureType element in the capabilities document, as well as any globally supported CRS identifier declared as a parameter of the GetFeature oepration in the capabilities document.
`abstract Configuration`	`getWfsConfiguration()`
`String`	`newRequestHandle(WFSOperationType operation)`
`abstract void`	`setCapabilities(WFSGetCapabilities capabilities)`
`abstract void`	`setConfig(WFSConfig config)`
`abstract Filter[]`	`splitFilters(QName typeName, Filter filter)` Splits the filter provided by the geotools query into the server supported and unsupported ones.
`abstract boolean`	`supports(GetFeatureRequest.ResultType resultType)`
`abstract boolean`	`supportsOperation(WFSOperationType operation, HttpMethod method)` Returns whether the service supports the given operation for the given HTTP method.
`abstract boolean`	`supportsTransaction(QName typeName)`

Methods inherited from class Specification
createGetCapabilitiesRequest, getVersion

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - WFSStrategy
```
public WFSStrategy()
```
- Method Detail
  - setCapabilities
```
public abstract void setCapabilities(WFSGetCapabilities capabilities)
```
  - setConfig
```
public abstract void setConfig(WFSConfig config)
```
  - getFeatureTypeInfo
```
public abstract FeatureTypeInfo getFeatureTypeInfo(QName typeName)
```
    Returns the feature type metadata object parsed from the capabilities document for the given typeName
    
    Parameters:
    
    typeName - the typeName as stated in the capabilities FeatureTypeList to get the info for
    
    Returns:
    
    the WFS capabilities metadata for typeName
    
    Throws:
    
    IllegalArgumentException - if typeName is not the name of a FeatureType stated in the capabilities document.
  - getConfig
```
public abstract WFSConfig getConfig()
```
  - getServiceVersion
```
public abstract Version getServiceVersion()
```
    Returns the WFS protocol version this facade talks to the WFS instance.
    
    Returns:
    
    the protocol version in use by this facade
  - getServerSupportedOutputFormats
```
public abstract Set<String> getServerSupportedOutputFormats(WFSOperationType operation)
```
    Returns:
    
    the output formats the server advertises for the given operation;
  - getServerSupportedOutputFormats
```
public abstract Set<String> getServerSupportedOutputFormats(QName typeName,
                                                            WFSOperationType operation)
```
    Parameters:
    
    typeName - the feature type name for which to return the supported output formats
    
    Returns:
    
    the output formats the server supports for the given type name and operation
  - getClientSupportedOutputFormats
```
public abstract List<String> getClientSupportedOutputFormats(WFSOperationType operation)
```
    Returns:
    
    the list of output formats supported by the client for the given operation, in preferred order.
  - getFeatureTypeNames
```
public abstract Set<QName> getFeatureTypeNames()
```
    Returns the set of type names as extracted from the capabilities document, including the namespace and prefix.
    
    Returns:
    
    the set of feature type names as extracted from the capabilities document
  - getFilterCapabilities
```
public abstract FilterCapabilities getFilterCapabilities()
```
    Returns the parsed version of the FilterCapabilities section in the capabilities document
    
    Returns:
    
    a FilterCapabilities out of the FilterCapabilities section in the getcapabilities document
  - splitFilters
```
public abstract Filter[] splitFilters(QName typeName,
                                      Filter filter)
```
    Splits the filter provided by the geotools query into the server supported and unsupported ones.
    
    Parameters:
    
    typeName -
    
    Returns:
    
    a two-element array where the first element is the supported filter and the second the one to post-process
    
    See Also:
    
    org.geotools.data.wfs.internal.WFSStrategy#splitFilters(org.opengis.filter.Filter)
  - supportsOperation
```
public abstract boolean supportsOperation(WFSOperationType operation,
                                          HttpMethod method)
```
    Returns whether the service supports the given operation for the given HTTP method.
    
    Parameters:
    
    operation - the operation to check if the server supports
    
    method - the HTTP method to check if the server supports for the given operation
    
    Returns:
    
    true if the operation/method is supported as stated in the WFS capabilities
  - supports
```
public abstract boolean supports(GetFeatureRequest.ResultType resultType)
```
  - supportsTransaction
```
public abstract boolean supportsTransaction(QName typeName)
```
  - getOperationURL
```
public abstract URL getOperationURL(WFSOperationType operation,
                                    HttpMethod method)
```
    Returns the URL for the given operation name and HTTP protocol as stated in the WFS capabilities.
    
    Parameters:
    
    operation - the name of the WFS operation
    
    method - the HTTP method
    
    Returns:
    
    The URL access point for the given operation and method or null if the capabilities does not declare an access point for the operation/method combination
    
    See Also:
    
    supportsOperation(WFSOperationType, HttpMethod)
  - getSupportedCRSIdentifiers
```
public abstract Set<String> getSupportedCRSIdentifiers(QName typeName)
```
    Returns the union of the default CRS and the other supported CRS's of the given feature type as declared in the corresponding FeatureType element in the capabilities document, as well as any globally supported CRS identifier declared as a parameter of the GetFeature oepration in the capabilities document.
    
    Parameters:
    
    typeName - the featuretype name as declared in the FeatureType/Name element of the WFS capabilities
    
    Returns:
    
    the list of supported CRS identifiers for the given feature type
  - dispose
```
public abstract void dispose()
```
    Allows to free any resource held.
    Successive calls to this method should not result in any exception, but the instance is meant to not be usable after the first invocation.
  - getDefaultOutputFormat
```
public abstract String getDefaultOutputFormat(WFSOperationType operation)
```
  - buildUrlGET
```
public abstract URL buildUrlGET(WFSRequest request)
```
  - getPostContentType
```
public abstract String getPostContentType(WFSRequest wfsRequest)
```
  - getPostContents
```
public abstract InputStream getPostContents(WFSRequest wfsRequest)
                                     throws IOException
```
    Returns the input stream with the POST body contents for the given request.
    
    Throws:
    
    IOException
  - getServiceInfo
```
public abstract WFSServiceInfo getServiceInfo()
```
  - getWfsConfiguration
```
public abstract Configuration getWfsConfiguration()
```
  - newRequestHandle
```
public String newRequestHandle(WFSOperationType operation)
```
  - getFieldTypeMappings
```
public abstract Map<QName,Class<?>> getFieldTypeMappings()
```
    Provide additional field type mappings
    
    Returns:
    
    field type mappings

Class WFSStrategy

Constructor Summary

Method Summary

Methods inherited from class Specification

Methods inherited from class Object

Constructor Detail

WFSStrategy

Method Detail

setCapabilities

setConfig

getFeatureTypeInfo

getConfig

getServiceVersion

getServerSupportedOutputFormats

getServerSupportedOutputFormats

getClientSupportedOutputFormats

getFeatureTypeNames

getFilterCapabilities

splitFilters

supportsOperation

supports

supportsTransaction

getOperationURL

getSupportedCRSIdentifiers

dispose

getDefaultOutputFormat

buildUrlGET

getPostContentType

getPostContents

getServiceInfo

getWfsConfiguration

newRequestHandle

getFieldTypeMappings