Map Engine ArcGIS

The ArcGIS Server Web Service map engine component provides a means for the Weave server to generate maps using ArcGIS Server via its web service API. This has the advantage over the direct ArcGIS Server map engine because it does not require any additional components to be installed on the server while still providing the same level of functionality (hence the direct connect component being made obsolete).

For information about using ArcGIS Server map caches with Weave see the page ArcGIS Server map caches.

Namespace

urn:com.cohga.server.map.arcgis.ws#1.0

Tags

mapengine

Properties

Name	Type	Required	Default	Description
id	string	yes		Unique identifier for this map engine, will be used by other items to refer to this map engine
url	string	yes		The URL used to connect to the ArcGIS server, e.g. `http://vmbreakout:8399/arcgis/services/Topo250/MapServer`
map	string	no	the first map	The name of the map within the map service to connect to if there is more than one. This is not the map service name, which is included the url, but the name of a map within the .mxd file itself. Generally this does not need to be set at all.
mapcache	boolean	no	false	Should a tile cache be used (if it's available). If this is false or not set then any tile cache generated for the map service WON'T be used
crs	string	no		Override the coordinate reference system supplied by ArcGIS
username	string	no		A username to connect to the server as
password	string	no		A password to connect to the server as, should be encrypted using 'encrypt' at the osgi prompt
usename	boolean	no	false	Use the layer name to refer to individual layers, especially useful when building a toc model since the names don't change as often as the id. You should ensure that the layer name is unique if you set this to true. If not set or set to false then the layer identifiers for each layer (which are used in toc models, amongst other things) will be taken from the order that the layer appears within the .mxd file, which can change if layers are added/removed from the .mxd file. If set to true then the label that appears in the .mxd file will be used as the identifier instead
transparent	boolean	no	false	If true then ArcGIS is asked to generate an image that is transparent where no map data it drawn

Sub-tags

Name	Type	Cardinality
pool	urn:com.cohga.server.pool#1.0:pool	0..1
layers	urn:layers	0..1
legend	urn:legend	0..1

Content

None

layers

Properties

None

Sub-tags

Name	Type	Cardinality
remove	urn:remove	0..1
layer	urn:layer	0..n

Content

None

remove

Properties

None

Sub-tags

Name	Type	Cardinality
layer	urn:layer	0..n

Content

None

layer

Properties

Name	Type	Required	Description
id	number	no	The id of the layer to match
name	string	no	The name of the layer to match

Sub-tags

None

Content

The id or name, depending upon the usename property, of the layer to match

Notes

The layer tag support two formats, one using the id and/or name attributes and the other using the tags content
Either one or both of the id and/or name attributes must be set OR tag content must be provided
If the content of the layer tag is used then the value of the usename property determines if the content should match the layer id or the layer name
Both the id and name attributes can be set, but they must match both values for the layer that you're trying to filter or they won't match the layer
The pool tag when used with ArcGIS Server also support a maxAgeMillis property which specifies how long the connection to ArcGIS Server should be kept for, this should be less that the value set for "The maximum time a client can use a service" in ArcGIS, note however that this check only occurs during connection validation, so testOnBorrow, testOnReturn and/or testWhileIdle must be set for the pool. ArcGIS Server Settings - Pooling and Processes

legend

Alter the display of the legend

Properties

None

Sub-tags

Name	Type	Cardinality
alias	urn:aliases	0..1

Content

None

aliases

List the new labels to be displayed for a layer

Properties

None

Sub-tags

Name	Type	Cardinality
alias	urn:alias	0..n

Content

None

alias

A single label change for a layer

Properties

Name	Type	Required	Description
id	string	yes	The id of the layer to change
label	string	yes	The label to display

Sub-tags

None

Content

None

Examples

Simple ArcGIS definition

<arcgisws:mapengine id="arcgis.topo">
	<url>http://vmbreakout:8399/arcgis/services/Topo250/MapServer</url>
</arcgisws:mapengine>

ArcGIS definition overriding CRS returned, asking for a transparent image and using the layer names, rather than order, as the unique identifier for a layer

<arcgisws:mapengine id="arcgis.roads">
	<url>http://vmbreakout:8399/arcgis/services/Roads/MapServer</url>
	<crs>EPSG:20255</crs>
	<transparent>true</transparent>
	<usename>true</usename>
</arcgisws:mapengine>

ArcGIS definition using a tile cache and connection pooling

<arcgisws:mapengine id="arcgis.base">
	<url>http://vmbreakout:8399/arcgis/services/Base/MapServer</url>
	<map>Layers</map>
	<crs>EPSG:20255</crs>
	<transparent>true</transparent>
	<usename>true</usename>
	<mapcache>true</mapcache>
	<pool:pool>
		<maxActive>16</maxActive>
		<minIdle>2</minIdle> <!-- always keep at least 2 connection open -->
		<maxIdle>8</maxIdle>
		<testOnBorrow>true</testOnBorrow>
		<testWhileIdle>true</testWhileIdle> <!-- enable background tests so that "old" (i.e. maxAgeMillis) connections can be cleaned up in the background -->
		<timeBetweenEvictionRunsMillis>30000</timeBetweenEvictionRunsMillis>
		<numTestsPerEvictionRun>16</numTestsPerEvictionRun> <!-- test all the connection on each run -->
		<minEvictableIdleTimeMillis>300000</minEvictableIdleTimeMillis> <!-- close a connection that's been idle for five minutes -->
		<whenExhaustedAction>block</whenExhaustedAction> <!-- ensure we don't create more than maxActive connections -->
		<maxAgeMillis>565000</maxAgeMillis> <!-- close anything that's been open for a the max allowed time from AGS (assuming 600 seconds here) minus a little more than the timeBetweenEvictionRunsMillis value to ensure it's removed before the AGS setting-->
	</pool:pool>
</arcgisws:mapengine>

ArcGIS definition providing only a single specific layer based on the layer id

<arcgisws:mapengine id="arcgis.roads">
	<url>http://vmbreakout:8399/arcgis/services/Base/MapServer</url>
	<layers>
		<layer id="0"/>
	</layers>
</arcgisws:mapengine>

ArcGIS definition providing only a single specific layer based on the layer name

<arcgisws:mapengine id="arcgis.roads">
	<url>http://vmbreakout:8399/arcgis/services/Base/MapServer</url>
	<layers>
		<layer name="Aerial Photo"/>
	</layers>
</arcgisws:mapengine>

ArcGIS definition providing only a single specific layer based on the layer id, using an alternate format

<arcgisws:mapengine id="arcgis.roads">
	<url>http://vmbreakout:8399/arcgis/services/Base/MapServer</url>
	<layers>
		<layer>0</layer>
	</layers>
</arcgisws:mapengine>

ArcGIS definition providing only a single specific layer based on the layer name, using an alternate format

<arcgisws:mapengine id="arcgis.roads">
	<url>http://vmbreakout:8399/arcgis/services/Base/MapServer</url>
	<usename>true</usename>
	<layers>
		<layer>Aerial Photo</layer>
	</layers>
</arcgisws:mapengine>

ArcGIS definition removing a specific layers based on the layer id

<arcgisws:mapengine id="arcgis.roads">
	<url>http://vmbreakout:8399/arcgis/services/Base/MapServer</url>
	<layers>
		<remove>
			<layer id="12"/>
			<layer id="13"/>
		</remove>
	</layers>
</arcgisws:mapengine>

ArcGIS definition removing a specific layers based on the layer name, using an alternate format

<arcgisws:mapengine id="arcgis.roads">
	<url>http://vmbreakout:8399/arcgis/services/Base/MapServer</url>
	<usename>true</usename>
	<layers>
		<remove>
			<layer>Property (Pending)</layer>
			<layer>Property (Historical)</layer>
		</remove>
	</layers>
</arcgisws:mapengine>

Changing labels for legend

<arcgis:mapengine id="mapengine.vector.ags">
	<url>http://vmbreakout:8399/arcgis/services/Base/MapServer</url>
	<legend>
		<aliases>
			<alias id="Boundary_Suburbs" label="Suburbs"/>
			<alias id="Property_BodyCorporate" label="Body Corporate"/>
		</aliases>
	</legend>
</arcgis:mapengine>