{
    "$schema": "http://json-schema.org/draft-03/schema#",
    "id": "http://ns.taverna.org.uk/2010/activity/spreadsheet-import.schema.json",
    "title": "Spreadsheet import activity configuration",
    "type": "object",
    "properties": {
        "@context": {
            "description": "JSON-LD context for interpreting the configuration as RDF",
            "required": true,
            "enum": ["http://ns.taverna.org.uk/2010/activity/spreadsheet-import.context.json"]
        },
        "columnRange": {
            "title": "Column Range",
            "description": "The range of columns to be imported (e.g. columns 2 to 7)",
            "type": "object",
            "$ref": "#/definitions/range",
            "default": {"start": 0, "end": 1},
            "required": true
        },
        "rowRange": {
            "title": "Row Range",
            "description": "The range of rows to be imported (e.g. rows 1 to 15)",
            "type": "object",
            "$ref": "#/definitions/range",
            "default": {"start": 0, "end": -1},
            "required": true
        },
        "emptyCellValue": {
            "title": "Empty Cell Value",
            "description": "The value to use for empty cells. The default is \"\"",
            "type": "string",
            "default": "",
            "required": true
        },
        "columnNames": {
            "title": "Column Name Mapping",
            "description": "Mapping from column to port names",
            "type": "array",
            "elements": {
            	"type": "object",
                "properties": {
           			"column": {
            			"title": "Column",
            			"description": "The name of the column",
            			"type": "string",
 		         		"required": true
            		},
           			"port": {
            			"title": "Port",
            			"description": "The name of the port",
            			"type": "string",
		          		"required": true
           			}
            	}
            },
            "required": false
        },
        "allRows": {
            "title": "Import All Rows",
            "description": "Imports all the rows containing data",
            "type": "boolean",
            "default": true,
            "required": true
        },
        "excludeFirstRow": {
            "title": "Exclude First Row",
            "description": "Excludes the first row from the import",
            "type": "boolean",
            "default": false,
            "required": true
        },
        "ignoreBlankRows": {
            "title": "Ignore Blank Rows",
            "description": "Excludes blank rows from the import",
            "type": "boolean",
            "default": false,
            "required": true
        },
        "emptyCellPolicy": {
            "title": "Empty Cell Policy",
            "description": "Policy for handling empty cells",
            "enum": ["EMPTY_STRING", "USER_DEFINED", "GENERATE_ERROR"],
            "default": "EMPTY_STRING",
            "required": true
        },
        "outputFormat": {
            "title": "Output Format",
            "description": "How the activity outputs are to be formatted",
            "enum": ["PORT_PER_COLUMN", "SINGLE_PORT"],
            "default": "PORT_PER_COLUMN",
            "required": true
        },
        "csvDelimiter": {
            "title": "CSV Delimiter",
            "description": "The delimiter to use for CSV input files. The default is ','",
            "type": "string",
            "default": ",",
            "required": true
        }
    },
    "definitions": {
    	"range": {
            "properties": {
           		"start": {
            		"title": "Start",
            		"description": "The start of the range",
            		"type": "integer",
		          	"required": true
           		},
           		"end": {
            		"title": "End",
            		"description": "The end of the range",
            		"type": "integer",
 		         	"required": true
            	},
           		"excludes": {
            		"title": "Excludes Ranges",
            		"description": "The ranges to exclude from this range",
            		"type": "array",
             		"items": { "type": "object", "$ref": "#/definitions/range" },
 		         	"required": false
            	}
            }
    	}
    }
}