deegree Webservices

The first step is to make sure you are running the latest stable releases of software:

When operating deegree in a production environment enable HTTPS with SSL or TLS. Either enable HTTPS on your Java Servlet Container or operate it behind a web server such as Apache httpd oder NGINX.

It is as a huge security problem to operate the deegree web app without setting a password for the deegree console. How to set the password for the deegree console is described in Configuration basics. The same applies to the deegree REST API. Since both transfer the credentials as clear text (with a little bit of obscurity) it is highly recommended to enable encryption on the protocol level as described above! For further information how to protect the deegree REST API read more in deegree REST interface. You should also consider to limit the access to both resources. Apply a filter by IP or hostname to only allow a subset of machines to connect and access the deegree console and REST API.

Click the workspaces link on the left:

The bottom of the workspaces view lists example workspaces provided by the deegree project. You should see the following items:

If you click Import, the corresponding example workspace will be fetched from the artifact repository of the deegree project and extracted in your deegree workspaces folder. Depending on the workspace and your internet connection, this may take a while (the Utah workspace is the largest one and about 70 MB in size).

After downloading has completed, the new workspace will be listed in section "Available workspaces":

You can now activate the downloaded workspace by clicking Start. Again, this may take a bit, as it may require some initialization. The workspace will be removed from the list of inactive workspaces and displayed next to "Active workspace:" (below the deegree logo). Your deegree instance is now running the configuration that is contained in the downloaded workspace.

On UNIX-like systems (Linux/Solaris/MacOS X), deegree’s configuration files are located in folder <$HOME/.deegree/. Note that $HOME is determined by the user that started the web application container that runs deegree. If you started the ZIP version of deegree as user "kelvin", then the directory will be something like /home/kelvin/.deegree.

On Windows, deegree’s configuration files are located in folder %USERPROFILE%/.deegree/. Note that %USERPROFILE% is determined by the user that started the web application container that runs deegree. If you started the ZIP version of deegree as user "kelvin", then the directory will be something like C:\Users\kelvin\.deegree or C:\Dokumente und Einstellungen\kelvin\.deegree.

If you downloaded all four example workspaces (as described in Getting started), set a console password and the proxy parameters, your .deegree directory will look like this:

As you see, this .deegree directory contains four subdirectories. Every subdirectory corresponds to a deegree workspace. Besides the configuration files inside the workspace, three global configuration files exist:

Note that only a single workspace can be active at a time. The information on the active one is stored in file webapps.properties.

In order to clarify the relation between workspace files and resources, let’s have a look at an example:

As noted, deegree scans the well-known resource directories for XML files (*.xml) on startup (note that it will omit directory manager, as it is not a well-known resource directory). For every file found, deegree will check the type of configuration format (by determining the name of the XML root element). If it is a recognized format, deegree will try to create and initialize a corresponding resource. For the example, this results in the following setup:

The individual XML resource formats and their options are described in the later chapters of the documentation.

It has already been hinted that resources have an identifier, e.g. for file jdbc/conn1.xml a JDBC connection pool with identifier conn1 is created. You probably have guessed that the identifier is derived from the file name (file name minus suffix), but you may wonder what purpose the identifier serves. The identifier is used for wiring resources. For example, an ISO metadata store resource requires a JDBC pool, because it provides the actual connections to the SQL database. Therefore, the corresponding resource configuration format has an element to specify it:

Example for wiring workspace resources

In this example, the ISO metadata store is wired to JDBC connection pool conn1. Many deegree resource configuration files contain such references to dependent resources. Some resources perform auto-wiring. For example, every CSW instance needs to connect to a metadata store for accessing stored metadata records. If the CSW configuration omits the reference to the metadata store, it is assumed that there’s exactly one metadata store defined in the workspace and deegree will automatically connect the CSW to this store.

In order to display the configured workspace resources of a certain type, click on the corresponding menu entry. The following screenshot shows the metadata store resources in deegree-workspace-csw:

The right part of the window displays a table with all configured metadata store resources. In this case, the workspace contains a single resource with identifier "iso19115" which is in status "On".

The "Deactivate" link allows to turn off a resource temporarily (while keeping the configuration):

After clicking on "Deactivate", the status of the resource will be "Off", and the "Deactivate" link will change to "Activate". Also, the "Reload" link at the top will turn red to notify that there may be changes that need to be propagated to dependent resources:

By clicking on the "Edit" link, you can edit the corresponding XML configuration inside your browser:

The XML configuration will be displayed:

You can now perform configuration changes in the text area and click on "Save". Or click any of the links:

If there are no (syntactical) errors in the configuration, the "Save" link will take you back to the corresponding resource view. Before actually saving the file, the service console will perform an XML validation of the file and display any syntactical errors:

In this case, the mandatory "JDBCConnId" element was removed, which violates the configuration schema. This needs to be corrected, before "Save" will actually save the file to the workspace directory.

The "Delete" link will deactivate the resource and delete the corresponding configuration file from the workspace:

In order to add a new resource, enter a new identifier in the text field, select a resource sub-type from the drop-down and click on "Create new":

The next steps depend on the type of resource, but generally you have to choose between different options and the result will be a new resource configuration file in the workspace.

One of the most helpful features of the console is that it can help to detect and fix errors in a workspace setup. For example, if you delete (or deactivate) JDBC connection "conn1" in deegree-workspace-csw and click "[Reload]", you will see the following:

The red exclamation marks near "services" and "metadata" show that these resource categories have resources with errors. Let’s click on the metadata link to see what’s going on:

The metadata resource view reveals that the metadata store "iso19115" has an error. Clicking on "Show errors" leads to:

The error message gives an important hint: "No JDBC connection pool with id 'conn1' defined." deegree was unable to initialize the metadata store, because it refers to a JDBC connection pool "conn1". You may wonder what the error in the services category is about:

As you see, the problem with the service resource ("There is no MetadataStore configured, ensure that exactly one store is available!) is actually a consequence of the other issue. Because deegree couldn’t initialize the metadata store, it was also unable to start up the CSW correctly. If you add a new JDBC connection "conn1" and click on "[Reload]", both problems should disappear.

In addition to the common management functionality, some resource views offer additional actions. This is described in the corresponding chapters, but here’s a short overview:

For creating your own workspace, you have two options. Option 1 is to use an existing workspace as a template and adapt it to your needs. Option 2 is to start from scratch, using an empty workspace. Adapting an existing workspace makes a lot of sense if your use-case is close to the scenario of the workspace. For example, if you want to set up INSPIRE View and Download Services, it is a good option to use Example workspace 1: INSPIRE Network Services as a starting point.

In order to create a new workspace, simply create a new directory in the .deegree directory.

Afterwards, switch to the new workspace using the services console, as described in Downloading and activating example workspaces.

The first step is to identify the types of workspace resources that you need for your use-case. You probably know already which types of services your setup requires. The next step is to identify the dependencies for every service by having a look at the respective chapter in the documentation. Let’s say you want a setup with a transactional WFS, a WMS and a CSW:

Now you have to dig deeper: What kinds of feature stores exist? Maybe you will find out that what you want is an SQL feature store. So you read the respective part of the documentation and see that an SQL feature store requires a JDBC connection pool resource. Do the same research for the WMS dependencies. A WMS depends on a theme. Find out what a theme is and what it requires. In short, you have to answer the following questions for every encountered resource:

At the end of this process you should know about the resources that you will have to configure for your setup.

All deegree XML configuration files have a corresponding XML schema, which allows to detect syntactical errors easily. The editor built into the services console performs validation when you save a configuration file. If the contents is not valid according to the schema, the file will not be saved, but an error message will be displayed:

If you prefer to use a different editor for editing deegree’s configuration files, it is highly recommended to choose a validating XML editor. Successfully tested editors are Eclipse and Altova XML Spy, but any schema-aware editor should work.

As pointed out in Displaying error messages, the service console indicates errors if resources cannot be initialized. Here’s an example:

In this case, it was not possible to initialize the JDBC connection (and the resources that depend on it). You can spot resource categories and resources that have errors easily, as they have a red exclamation mark. Click on the respective resource level and on "Errors" near the broken resource to see the error message. After fixing the error, click on "Reload" to re-initialize the workspace. If your fix was successful, the exclamation mark will be gone.

Additional information can be found in the deegree log. If you’re running the ZIP version, switch to the terminal window. When initializing workspace resources, information on every resource will be logged, along with error messages.

The only mandatory option is QueryCRS, therefore, a minimal WFS configuration example looks like this:

WFS config example 1: Minimal configuration

This will create a deegree WFS with the feature types from all configured feature stores in the workspace and urn:ogc:def:crs:EPSG::4258 as coordinate system for returned GML geometries.

A more complex configuration example looks like this:

WFS config example 2: More complex configuration

The deegree WFS config file format is defined by schema file http://schemas.deegree.org/services/wfs/3.4.0/wfs_configuration.xsd. The root element is <deegreeWFS> and the config attribute must be 3.4.0. The following table lists all available configuration options (complex ones contain nested options themselves). When specifiying them, their order must be respected.

The remainining sections describe these options and their sub-options in detail.

By default, WFS-T requests will be rejected. Setting the EnableTransactions option to true will enable transaction support. This option has the optional attribute idGenMode which controls how ids of inserted features (the values in the gml:id attribute) are treated. There are three id generation modes available:

This option can be used to configure the supported request types. Currently the supported encodings can be specified for each request type. If the option is missing all encodings are supported for each request type. The option has the following sup-options:

Each request type has the following sup-option:

By default deegree will provide all supported request types with all available encodings (kvp, xml, soap).

If a single supported request or encoding is configured, all non configured requests or encodings are disabled.

Example: To limit the provided request types to GetCapabilities and GetFeature this request types can be added without SupportedEncodings sub-option:

Example: To disable SOAP encoding the other encodings can be added without SupportedRequests sub-option:

By default, a deegree WFS will offer GML 2, 3.0, 3.1, and 3.2 as output formats and announce those formats in the GetCapabilities responses (except for WFS 1.0.0, as this version of the standard has no means of announcing other formats than GML 2). The element for GetFeature responses is wfs:FeatureCollection, as mandated by the WFS specification.

In some cases, you may want to alter aspects of the offered output formats. For example, if you want your WFS to serve a specific application schema (e.g. INSPIRE Data Themes), you should restrict the announced GML versions to the one used for the application schema. These and other output-format related aspects can be controlled by element GMLFormat.

Example for WFS config option GMLFormat

The GMLFormat option has the following sub-options:

Using option element CustomFormat, it is possible to plug-in your own Java classes to generate the output for a specific mime type (e.g. a binary format)

Besides standard ('ad hoc') queries, WFS 2.0.0 introduces so-called stored queries. When WFS 2.0.0 support is activated, your WFS will automatically support the well-known stored query urn:ogc:def:storedQuery:OGC-WFS::GetFeatureById (defined in the WFS 2.0.0 specification). It can be used to query a feature instance by specifying it’s gml:id (similar to GetGmlObject requests in WFS 1.1.0). In order to define custom stored queries, use the StoredQuery element to specify the file name of a StoredQueryDefinition file. The given file name (can be relative) must point to a valid WFS 2.0.0 StoredQueryDefinition file. Here’s an example:

Example for a WFS 2.0.0 StoredQueryDefinition file

This example is actually usable if your WFS is set up to serve the ad:Address feature type from INSPIRE Annex I. It defines the stored query urn:x-inspire:storedQuery:GetAddressesForStreet for retrieving ad:Address features that are located in the specified street. The street name is passed using parameter streetName. If your WFS instance can be reached at http://localhost:8080/services, you could use the request http://localhost:8080/services?request=GetFeature&storedquery_id=urn:x-inspire:storedQuery:GetAddressesForStreet&streetName=Madame%20Curiestraat to fetch the ad:Address features in street Madame Curiestraat.

The attribute returnFeatureTypes of QueryExpressionText can be left empty. If this is the case, the element will be filled with all feature types served by the WFS when executing a DescribeStoredQueries request. The same applies for the value $\{deegreewfs:ServedFeatureTypes}. If a value is set for returnFeatureTypes, the user is responsible to configure it as expected: Usually values of the typeNames of the Query-Elements should be used. An exception is thrown as DescribeStoredQueries response, if the configured feature type is not served by the WFS.

To enable support for the Manage Stored Queries conformance class for WFS 2.0.0 it is required to create a directory storedqueries/managed in your workspace. The stored queries created with CreateStoredQuery requests are stored in this directory. They are loaded during startup of deegree automatically. It is not recommend to put the StoredQueries configured in the WFS configuration with the StoredQuery element into this folder. If the directory is missing the CreateStoredQuery request returns an exception.

Important for applications like INSPIRE, it is often desirable to include predefined blocks of XML in the extended capabilities section of the WFS capabilities output. This can be achieved simply by adding these blocks to the extended capabilities element of the configuration:

You must set the attribute wfsVersions to indicate the version that you want to define the extended capabilities for. If your service supports multiple protocol versions (e.g. a WFS that supports 1.1.0 and 2.0.0), you may include multiple ExtendedCapabilities elements in the metadata configuration.

Readers familiar with the WMS protocol might be wondering why layers can not be configured directly in the WMS configuration file. Inspired by WMTS 1.0.0 we found the idea to separate structure and content very appealing. Thinking of a layer store that just offers a set of layers is an easy concept. Thinking of a theme as a structure that may contain layers at certain points also makes sense. But when thinking of WMS the terms begin clashing. We suggest to avoid confusion as much as possible by using the same name for each corresponding theme, layer and possibly even tile/feature/coverage data sources. We believe that once you work a little with the concept of themes, and seeing them exported as WMS layer trees, the concepts fit well enough so you can appreciate the clean cut.

The configuration can be split up in six sections. Readers familiar with other deegree service configurations may recognize some similarities, but we’ll describe the options anyway, because there may be subtle differences. A document template looks like this:

The following table shows what top level options are available.

Here is a snippet for quick copy & paste:

This option can be used to configure the supported request types. Currently, the supported encodings can be specified for each request type. If the option is missing, all encodings are supported for each request type. The option has the following sup-options:

Each request type has the following sup-option:

By default deegree will provide all supported request types with all available encodings (kvp, xml, soap).

If a single supported request or encoding is configured, all non configured requests or encodings are disabled.

Example: To limit the provided request types to GetCapabilities and GetFeature this request types can be added without SupportedEncodings sub-option:

Example: To disable SOAP encoding the other encodings can be added without SupportedRequests sub-option:

You can configure the behaviour of layers using the DefaultLayerOptions element.

Have a look at the layer options and their values:

You can configure the WMS to use one or more preconfigured themes. In WMS terms, each theme is mapped to a layer in the WMS capabilities. So if you use one theme, the WMS root layer corresponds to the root theme. If you use multiple themes, a synthetic root layer is exported in the capabilities, with one child layer corresponding to each root theme. The themes are configured using the ThemeId element.

Here is an example snippet of the content section:

Any mime type can be configured to be available as response format for GetCapabilities requests, although the most commonly used is probably text/html. A XSLT script is used to generate the output.

This is how the configuration section looks like:

Of course it is possible to define as many custom formats as you want, as long as you use a different mime type for each (just duplicate the GetCapabilitiesFormat element). If you use one of the default formats, the default output will be overridden with your configuration.

Any mime type can be configured to be available as response format for GetFeatureInfo requests, although the most commonly used is probably text/html. There are two alternative ways of controlling how the output is generated (besides using the default HTML output). One involves a deegree specific templating mechanism, the other involves writing an XSLT script. The deegree specific mechanism has the advantage of being considerably less verbose, making common use cases very easy, while the XSLT approach gives you all the freedom.

This is how the configuration section looks like for configuring a deegree templating based format:

The configuration for the XSLT approach looks like this:

Of course it is possible to define as many custom formats as you want, as long as you use a different mime type for each (just duplicate the GetFeatureInfoFormat element). If you use one of the default formats, the default output will be overridden with your configuration.

In order to write your XSLT script, you’ll need to develop it against a specific GML version (namespaces between GML versions may differ, GML output itself will differ). The default is GML 3.2, you can override it by specifying the gmlVersion attribute on the XSLTFile element. Valid GML version strings are GML_2, GML_30, GML_31 and GML_32.

If you want to learn more about the templating format, read the following sections.

The templating format can be used to create text based output formats for featureinfo output. It uses a number of definitions, rules and special constructs to replace content with other content based on feature and property values. Please note that you should make sure your file is UTF-8 encoded if you’re using umlauts.

Any mime type of the following output formats can be configured to be available as response format for GetMap requests.

If no format has been configured, all formats are supported.

This is how the configuration section looks like for configuring only image/png as image output format:

Any mime type can be configured to be available as response format for Exceptions, although the most commonly used is probably text/html. A XSLT script is used to generate the output.

This is how the configuration section looks like:

Of course it is possible to define as many custom formats as you want, as long as you use a different mime type for each (just duplicate the ExceptionFormat element). If you use one of the default formats, the default output will be overridden with your configuration.

Important for applications like INSPIRE, it is often desirable to include predefined blocks of XML in the extended capabilities section of the WMS capabilities output. This can be achieved simply by adding these blocks to the extended capabilities element of the configuration:

The deegree WMS supports a number of vendor specific parameters. Some parameters are supported on a per layer basis while some are applied to the whole request. Most of the parameters correspond to the layer options above.

The parameters which are supported on a per layer basis can be used to set an option globally, eg. …​&REQUEST=GetMap&ANTIALIAS=BOTH&…​, or for each layer separately (using a comma separated list): …​&REQUEST=GetMap&ANTIALIAS=BOTH,TEXT,NONE&LAYERS=layer1,layer2,layer3&…​ Most of the layer options have a corresponding parameter with a similar name: ANTIALIAS, INTERPOLATION, QUALITY and MAX_FEATURES. The feature info radius can currently not be set dynamically.

The PIXELSIZE parameter can be used to dynamically adjust the resolution of the resulting image. The default is the WMS default of 0.28 mm. So to achieve a double resolution, you can double the WIDTH/HEIGHT parameter values and set the PIXELSIZE parameter to 0.14.

Using the QUERYBOXSIZE parameter you can include features when rendering that would normally not intersect the envelope specified in the BBOX parameter. That can be useful if you have labels at point symbols out of the envelope which would be rendered partly inside the map. Normal GetMap behaviour will exclude such a label. With the QUERYBOXSIZE parameter you can specify a factor by which to enlarge the original bounding box, which is used solely for querying the data store (the actual extent returned will not be changed!). Use values like 1.1 to enlarge the envelope by 5% in each direction (this would be 10% in total).

A WMS 1.3.0 can be requested by HTTP POST (without any KVP) containing XML in request body. The provided XML has to be compliant to a specific XML schema depending on the requested operation.

The operations GetCapabilities, GetMap and GetFeatureInfo support XML request encoding.

The SOAP protocol can be used to request a WMS 1.3.0. SOAP 1.1 and 1.2 are supported.

A SOAP request is send via HTTP POST (without any KVP) and contains a XML request body. The request body consists of a SOAP envelope and a XML request body as described in chapter XML request encoding.

The operations GetCapabilities, GetMap and GetFeatureInfo support SOAP request encoding.

GetCapabilities SOAP request body example (can be used with Utah example workspace)

The only mandatory section is ServiceConfiguration (which can be empty), therefore a minimal WMTS configuration example looks like this:

WMTS config example 1: Minimal configuration

This will create a deegree WMTS resource that connects to all configured themes of the workspace.

A more complex configuration that restricts the offered themes looks like this:

WMTS config example 2: More complex configuration

The deegree WMTS config file format is defined by schema file http://schemas.deegree.org/services/wmts/3.4.0/wmts.xsd. The root element is deegreeWMTS and the config attribute must be 3.4.0.

The following table lists all available configuration options. When specifying them, their order must be respected.

Below the ServiceConfiguration section you can specify custom featureinfo format handlers:

Have a look at section Custom feature info formats (in the WMS chapter) to see how custom featureinfo formats are configured. Take note that the GetFeatureInfo operation is currently only supported for remote WMS tile store backends.

In order to improve the response time of WMTS GetTile requests, it is possible to add an Ehcache configuration to optimize the throughput of the service. The configuration is placed in the root directory of the workspace.

Currently the deegree services console supports the following steps:

There is no mandatory element, therefore a minimal CSW configuration example looks like this:

CSW config example 1: Minimal configuration

The deegree CSW config file format is defined by schema file http://schemas.deegree.org/services/csw/3.4.0/csw_configuration.xsd. The root element is deegreeCSW and the config attribute must be 3.4.0.

The following table lists all available configuration options. When specifiying them, their order must be respected.

A minimal valid WPS configuration example looks like this:

This will create a WPS resource with the following properties:

A more complex configuration example looks like this:

This will create a WPS resource with the following properties:

The deegree WPS config file format is defined by schema file http://schemas.deegree.org/services/wps/3.1.0/wps_configuration.xsd. The root element is deegreeWPS and the config attribute must be 3.1.0. The following table lists all available configuration options (complex ones contain nested options themselves). When specifiying them, their order must be respected.

The remainder of this section describes these options and their sub-options in detail.

This section controls aspects that are related to temporary storage (for input and output parameter values) during the execution of processes. The DefaultExecutionManager option has the following sub-options:

The ServiceIdentification option has the following sub-options:

The ServiceProvider option has the following sub-options:

This type of metadata is attached to the datasets that a service offers (e.g. layers for the WMS or feature types for the WFS). The services themselves may have specific mechanisms to override this metadata, so make sure to have a look at the appropriate service sections. However, some metadata configuration can be done right here.

To start with, you’ll need to add a DatasetMetadata container element:

Apart from the descriptive metadata (title, abstract etc.) for each dataset, you can also configure _MetadataURL_s, external metadata links and metadata as well as external metadata IDs.

For general MetadataURL configuration, you can configure the element MetadataUrlTemplate. Its content can be any URL, which may contain the pattern ${metadataSetId}. For each dataset (layer, feature type) the service will output a MetadataURL based on that pattern, if a MetadataSetId has been configured for that dataset (see below). The template is optional, if omitted, no MetadataURL will be produced.

Configuration for the template looks like this:

You can also configure ExternalMetadataAuthority elements, which are currently only used by the WMS. You can define multiple authorities, with the authority URL as text content and a unique name attribute. For each dataset you can define an ID for an authority by refering to that name. This will generate an AuthorityURL and Identifier pair in WMS capabilities documents (version 1.3.0 only).

Configuration for an external authority looks like this:

Now follows the list of the actual dataset metadata. You can add as many as you need:

For each dataset, you can configure the metadata as outlined in the following table:

Extended capabilities are generic metadata sections below the OperationsMetadata element in the GetCapabilities response. They are not defined by the OGC service specifications, but by additional guidance documents, such as the INSPIRE Network Service TGs. deegree treats this section as a generic XML element and includes it in the output. If your service supports multiple protocol versions (e.g. a WFS that supports 1.1.0 and 2.0.0), you may include multiple ExtendedCapabilities elements in the metadata configuration and use attribute protocolVersions to indicate the version that you want to define the extended capabilities for.

Some web service responses contain URLs that refer back to the service, for example in capabilities documents (responses to GetCapabilities requests). By default, deegree derives these URLs from the incoming request, so you don’t have to think about this, even when your server has multiple network interfaces or hostnames. However, sometimes it is required to override these URLs, for example when using deegree behind a proxy or load balancer.

To override the reported URLs, put a fragment like the following into the main.xml:

For this example, deegree would report http://www.mygeoportal.com/ows as service endpoint URL in capabilities responses, regardless of the real connection details of the deegree server. If a specific service is contacted on the deegree server, for example via a request to http://realnameofdeegreemachine:8080/deegree-webservices/services/inspire-wfs-ad, deegree would report http://www.mygeoportal.com/ows/inspire-wfs-ad.

The URL configured by Resources relates to the reported URL of the resources servlet, which allows to access parts of the active deegree workspace via HTTP. Currently, this is only used in WFS DescribeFeatureType responses that access GML application schema directories.

The URLs changed by this configuration option are overwritten by the URL specified by the X-Forwarded-Host, X-Forwarded-Port and X-Forwarded-Proto header values. For example via a request to http://realnameofdeegreemachine:8080/deegree-webservices/services/inspire-wfs-ad and the specified header values

deegree would report https://www.mysecondgeoportal.com:8088/deegree-webservices/services/inspire-wfs-ad. The URL path is kept as in the request URL. Host, port and protocol are replaced by the values from the header. If X-Forwarded-Port or X-Forwarded-Proto are missing the values are taken from the request URL, deegree would report http://www.mysecondgeoportal.com/deegree-webservices/services/inspire-wfs-ad. This behaviour is usefull when the deegree webservice can be requested via different URLs.

By default, the execution time of a request to a web service is not constrained. It depends on the complexity of the request and the configuration — it’s well possible to create a WMS configuration and a GetMap request that will require hours of processing time. Generally, it is the responsibility of the configuration creator to ensure that service requests will return in a reasonable time (e.g. by applying scale limitations in the layer configuration).

Nevertheless, it is sometimes desirable to enforce an execution time limit. This can be achieved by using the RequestTimeoutMilliseconds option:

This example enforces the following time-out behaviour:

Besides the time-out value in milliseconds, the following sub-options are supported by RequestTimeoutMilliseconds:

Some feature types have a more complex structure than others. Traditionally, GIS software copes with "simple" feature types:

Basically, a simple feature type is everything that can be represented using a single database table or a single shape file. In contrast, "rich" feature types additionally allow the following:

Example of a rich feature instance encoded in GML

An application schema defines a number of feature types for a particular application domain. When referring to an application schema, one usually means a GML application schema that defines a hierarchy of rich feature types. Examples for GML application schemas are:

The following diagram shows a part of the INSPIRE Annex I application schema in UML form:

The only mandatory element is File. A minimal valid configuration example looks like this:

Shape Feature Store config (minimal configuration example)

This configuration will set up a feature store based on the shape file /tmp/rivers.shp with the following settings:

A more complex example that uses all available configuration options:

Shape Feature Store config (more complex configuration example)

This configuration will set up a feature store based on the shape file /tmp/rivers.shp with the following settings:

The configuration format for the deegree shape feature store is defined by schema file http://schemas.deegree.org/datasource/feature/shape/3.1.0/shape.xsd. The following table lists all available configuration options. When specifiying them, their order must be respected.

The only mandatory element is GMLSchema. A minimal valid configuration example looks like this:

Memory Feature Store config (minimal configuration example)

This configuration will set up a memory feature store with the following settings:

A more complex example that uses all available configuration options:

Memory Feature Store config (more complex configuration example)

This configuration will set up a memory feature store with the following settings:

The configuration format for the deegree memory feature store is defined by schema file http://schemas.deegree.org/datasource/feature/memory/3.0.0/memory.xsd. The following table lists all available configuration options (the complex ones contain nested options themselves). When specifiying them, their order must be respected.

There are three mandatory elements: JDBCConnId, SQLStatement and BBoxStatement. A minimal configuration example looks like this:

Simple SQL feature store config (minimal configuration example)

Simple SQL feature store config (more complex configuration example)

The configuration format is defined by schema file http://schemas.deegree.org/datasource/feature/simplesql/3.0.1/simplesql.xsd. The following table lists all available configuration options (the complex ones contain nested options themselves). When specifiying them, their order must be respected.