Excerpt
Step-by-step guide
There are two ways to create an adapter over an executable:
- Creating and running the adapter by using the SNAP application, which has user-friendly forms for this operations
- Creating the adapter files by using a text editor and a jar packager (for more experimented users/developers)
In order to use one of this two ways, it is necessary to now the format of the adapter's files. The adapter consists in a folder or a jar file; the name of the folder or jar file is the alias of the adapter. The folder/jar file should contain:
- a file called <adapter_alias>-template.vm, which is a velocity template that contains the command line parameters of the execution, each parameter on a separate line
- a subfolder called META-INF
- a file called descriptor.xml under the META-INF subfolder
The xml descriptor file should have the format (tag hierarchy) :
- the root tag is called operator. This tag contains the following children:
- the tag name. This tag content coresponds to the unique name that the operator will be registered with in SNAP context
- the tag operatorClass should contain the value org.esa.snap.framework.gpf.operators.tooladapter.ToolAdapterOp since this is the class of the adapters operators
- the tag alias. The content of this tag should match the name of the operator's folder
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