prerna.reactor.insights.recipemanagement.AddInsightParameterReactor Maven / Gradle / Ivy

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package prerna.reactor.insights.recipemanagement;

import java.util.List;
import java.util.Map;

import prerna.query.parsers.ParamStruct;
import prerna.query.parsers.ParamStructDetails;
import prerna.sablecc2.om.PixelDataType;
import prerna.sablecc2.om.ReactorKeysEnum;
import prerna.sablecc2.om.VarStore;
import prerna.sablecc2.om.nounmeta.NounMetadata;

public class AddInsightParameterReactor extends AbstractInsightParameterReactor {

	public AddInsightParameterReactor() {
		this.keysToGet = new String[] {ReactorKeysEnum.PARAM_STRUCT.getKey()};
	}
	
	@Override
	public NounMetadata execute() {
		// get the parameter as a map of key=value pairs
		Map paramMap = getParamMap();
		// turn this into a param struct object
		ParamStruct paramStruct = ParamStruct.generateParamStruct(paramMap);
		// validate the paramStruct
		// right now - only check is based on the data types
		List details = paramStruct.getDetailsList();
		PixelDataType curDataType = null;
		for(ParamStructDetails detail : details) {
			// null case if the first time
			if(curDataType == null) {
				curDataType = detail.getType();
			}
			// need to compare and ensure they are the same
			else if(curDataType != detail.getType()) {
				throw new IllegalArgumentException("Cannot append to existing because the data type of '"
						+ detail.getColumnName() + "' is '" + detail.getType() 
						+ "' and does not match the existing data type of '" + curDataType + "'");
			}
		}
		String paramName = paramStruct.getParamName();
		// parameter name must be defined
		if(paramName == null || paramName.isEmpty()) {
			throw new IllegalArgumentException("Parameter name is not defined");
		}
		// parameter shouldn't already exists
		String variableName = VarStore.PARAM_STRUCT_PREFIX + paramName;
		if(this.insight.getVarStore().getInsightParameterKeys().contains(variableName)) {
			throw new IllegalArgumentException("Paramter name already exists. Please update the existing parameter name");
		}
		
		NounMetadata pStructNoun = new NounMetadata(paramStruct, PixelDataType.PARAM_STRUCT);
		this.insight.getVarStore().put(variableName, pStructNoun);
		return pStructNoun;
	}

}