/*
* Copyright 2005 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.decisiontable.parser;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import org.drools.template.model.Global;
import org.drools.template.model.Import;
import org.drools.template.parser.DecisionTableParseException;
/**
* @author <a href="mailto:michael.neale@gmail.com"> Michael Neale </a>
*
* Parking lot for utility methods that don't belong anywhere else.
*/
public class RuleSheetParserUtil {
private RuleSheetParserUtil() {
// strictly util
}
public static String getRuleName(final String ruleRow) {
String testVal = ruleRow.toLowerCase();
final int left = testVal.indexOf( DefaultRuleSheetListener.RULE_TABLE_TAG );
return ruleRow.substring( left + DefaultRuleSheetListener.RULE_TABLE_TAG.length() ).trim();
}
private static void invalidRuleTableDef(final String ruleRow) {
throw new IllegalArgumentException( "Invalid rule table header cell. Should be in the format of 'RuleTable YourRuleName'. " + "It was: \n [" + ruleRow + "] \n" );
}
/**
* Create a list of Import model objects from cell contents.
* @param importCells The cells containing text for all the classes to import.
* @return A list of Import classes, which can be added to the ruleset.
*/
public static List<Import> getImportList(final List<String> importCells) {
final List<Import> importList = new ArrayList<Import>();
if ( importCells == null ) return importList;
for( String importCell: importCells ){
final StringTokenizer tokens = new StringTokenizer( importCell, "," );
while ( tokens.hasMoreTokens() ) {
final Import imp = new Import();
imp.setClassName( tokens.nextToken().trim() );
importList.add( imp );
}
}
return importList;
}
/**
* Create a list of Global model objects from cell contents.
* @param variableCella The cells containing text for all the global variables to set.
* @return A list of Variable classes, which can be added to the ruleset.
*/
public static List<Global> getVariableList( final List<String> variableCells ){
final List<Global> variableList = new ArrayList<Global>();
if ( variableCells == null ) return variableList;
for( String variableCell: variableCells ){
final StringTokenizer tokens = new StringTokenizer( variableCell, "," );
while ( tokens.hasMoreTokens() ) {
final String token = tokens.nextToken();
final Global vars = new Global();
final StringTokenizer paramTokens = new StringTokenizer( token, " " );
vars.setClassName( paramTokens.nextToken() );
if ( !paramTokens.hasMoreTokens() ) {
throw new DecisionTableParseException( "The format for global variables is incorrect. " + "It should be: [Class name, Class otherName]. But it was: [" + variableCell + "]" );
}
vars.setIdentifier( paramTokens.nextToken() );
variableList.add( vars );
}
}
return variableList;
}
/**
* @return true is the String could possibly mean true. False otherwise !
*/
public static boolean isStringMeaningTrue(String property) {
if ( property == null ) {
return false;
} else {
property = property.trim();
if ( property.equalsIgnoreCase( "true" ) ) {
return true;
} else if ( property.startsWith( "Y" ) ) {
return true;
} else if ( property.startsWith( "y" ) ) {
return true;
} else if ( property.equalsIgnoreCase( "on" ) ) {
return true;
} else {
return false;
}
}
}
/**
* Convert spreadsheet row, column numbers to a cell name.
* @param row row number
* @param col the column number. Start with zero.
* @return The spreadsheet name for this cell, "A" to "ZZZ".
*/
public static String rc2name( int row, int col ){
StringBuilder sb = new StringBuilder();
int b = 26;
int p = 1;
if( col >= b ){
col -= b;
p *= b;
}
if( col >= b*b ){
col -= b*b;
p *= b;
}
while( p > 0 ){
sb.append( (char)(col/p + (int)'A') );
col %= p;
p /= b;
}
sb.append( row + 1 );
return sb.toString();
}
}