{
    "$schema": "http://json-schema.org/draft-03/schema#",
    "id": "http://ns.taverna.org.uk/2010/activity/xpath.schema.json",
    "title": "XPath activity configuration",
    "type": "object",
    "properties": {
        "@context": {
            "description": "JSON-LD context for interpreting the configuration as RDF",
            "required": true,
            "enum": ["http://ns.taverna.org.uk/2010/activity/xpath.context.json"]
        },
        "exampleXmlDocument": {
            "title": "Example XML document",
            "type": "string",
            "required": false,
        },
        "xpathExpression": {
            "title": "XPath expression",
            "type": "string",
            "required": true,
        },
        "xpathNamespaceMap": {
            "title": "XPath Namespace Map",
            "type": "array",
            "required": false,
            "items": { "type": "object", "$ref": "#/definitions/namespaceMapping" }
        }
    },
    "definitions": {
    	"namespaceMapping": {
            "properties": {
           		"prefix": {
            		"title": "Namespace Prefix",
            		"type": "string",
		          	"required": true
           		},
           		"uri": {
            		"title": "Namespace URI,
            		"type": "string",
 		         	"required": true
            	}
            }
    	}
    }
}