package org.drools.decisiontable.parser;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.drools.template.model.SnippetBuilder;
import org.drools.template.parser.DecisionTableParseException;
/**
* Builds up a consequence entry.
* @author Michael Neale
*
*/
public class RhsBuilder implements SourceBuilder {
private int headerRow;
private int headerCol;
private ActionType.Code actionTypeCode;
private Map<Integer, String> templates;
private String variable;
private List<String> values;
private boolean hasValues;
/**
* @param boundVariable Pass in a bound variable if there is one.
* Any cells below then will be called as methods on it.
* Leaving it blank will make it work in "classic" mode.
*/
public RhsBuilder( ActionType.Code code, int row, int column, String boundVariable ) {
this.actionTypeCode = code;
this.headerRow = row;
this.headerCol = column;
this.variable = boundVariable == null ? "" : boundVariable.trim();
this.templates = new HashMap<Integer, String>();
this.values = new ArrayList<String>();
}
public ActionType.Code getActionTypeCode(){
return this.actionTypeCode;
}
public void addTemplate(int row, int column, String content) {
Integer key = new Integer( column );
content = content.trim();
if ( isBoundVar() ) {
content = variable + "." + content + ";";
}
this.templates.put( key, content );
}
private boolean isBoundVar() {
return !("".equals( variable ));
}
public void addCellValue(int row, int column, String value) {
hasValues = true;
String template = (String) this.templates.get( new Integer( column ) );
if( template == null ){
throw new DecisionTableParseException( "No code snippet for " +
this.actionTypeCode + ", above cell " +
RuleSheetParserUtil.rc2name( this.headerRow + 2, this.headerCol ) );
}
SnippetBuilder snip = new SnippetBuilder(template);
this.values.add(snip.build( value ));
}
public void clearValues() {
this.hasValues = false;
this.values.clear();
}
public String getResult() {
StringBuffer buf = new StringBuffer();
for ( Iterator<String> iter = this.values.iterator(); iter.hasNext(); ) {
buf.append( iter.next() );
if (iter.hasNext()) {
buf.append( '\n' );
}
}
return buf.toString();
}
public boolean hasValues() {
return hasValues;
}
}