org.drools.decisiontable.parser
Class DefaultRuleSheetListener

java.lang.Object
  org.drools.decisiontable.parser.DefaultRuleSheetListener

All Implemented Interfaces:

RuleSheetListener, org.drools.template.parser.DataListener

Direct Known Subclasses:

RuleMatrixSheetListener

public class DefaultRuleSheetListener
extends Object
implements RuleSheetListener

An object of this class is prepared to receive calls passing it the contents of a spreadsheet containing one or more decision tables. Each of these tables is then expanded into a set of similar rules, varying to a degree with respect to the patterns and actions. A "rule set" starts with some overall definitions such as imports, globals, functions and queries. A table is identifed by a cell beginning with the text "RuleTable". The first row after the table identifier defines the column type: either a pattern of the condition or an action for the consequence, or an attribute. The second row contains optional pattern type declarations. If cells in this row are merged, then all snippets below the merged stretch become part of the same pattern, as separate constraints. The third row identifies the java code block associated with the condition or consequence. This code block should include one or more parameter markers for the insertion of values defined in cells of that column. The third row is available for comments on the purpose of the column. All subsequent rows identify rules with the set, providing values to be inserted where there are markers in the code snippets defined in the third row, or for the attribute identified by the column header. href="mailto:michael.neale@gmail.com"> Michael Neale

Field Summary

static String	DECLARES_TAG
static String	ESCAPE_QUOTES_FLAG
static String	FUNCTIONS_TAG
static String	IMPORT_TAG
static String	QUERIES_TAG
static String	RULE_TABLE_TAG
static String	RULESET_TAG
static String	SEQUENTIAL_FLAG
static String	VARIABLES_TAG

Fields inherited from interface org.drools.template.parser.DataListener

NON_MERGED

Constructor Summary

DefaultRuleSheetListener()
Constructor.

DefaultRuleSheetListener(boolean showPackage)
Constructor.

Method Summary

protected void	addRule(org.drools.template.model.Rule newRule) Add a new rule to the current list of rules
void	finishSheet()
protected org.drools.template.model.Rule	getCurrentRule()
PropertiesSheetListener.CaseInsensitiveMap	getProperties() Return the rule sheet properties
org.drools.template.model.Package	getRuleSet() Build the final ruleset as parsed.
void	newCell(int row, int column, String value, int mergedColStart)
void	newRow(int rowNumber, int columns)
protected void	postInitRuleTable(int row, int column, String value) Called after rule table initialisation.
protected void	preInitRuleTable(int row, int column, String value) Called before rule table initialisation.
void	setWorksheetName(String worksheetName)
void	startSheet(String name)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

QUERIES_TAG

public static final String QUERIES_TAG

See Also:

Constant Field Values

FUNCTIONS_TAG

public static final String FUNCTIONS_TAG

See Also:

Constant Field Values

DECLARES_TAG

public static final String DECLARES_TAG

See Also:

Constant Field Values

IMPORT_TAG

public static final String IMPORT_TAG

See Also:

Constant Field Values

SEQUENTIAL_FLAG

public static final String SEQUENTIAL_FLAG

See Also:

Constant Field Values

ESCAPE_QUOTES_FLAG

public static final String ESCAPE_QUOTES_FLAG

See Also:

Constant Field Values

VARIABLES_TAG

public static final String VARIABLES_TAG

See Also:

Constant Field Values

RULE_TABLE_TAG

public static final String RULE_TABLE_TAG

See Also:

Constant Field Values

RULESET_TAG

public static final String RULESET_TAG

See Also:

Constant Field Values

Constructor Detail

DefaultRuleSheetListener

public DefaultRuleSheetListener()

Constructor.

DefaultRuleSheetListener

public DefaultRuleSheetListener(boolean showPackage)

Constructor.

Parameters:

showPackage - if true, the rule set name is passed to the resulting package

Method Detail

setWorksheetName

public void setWorksheetName(String worksheetName)

getProperties

public PropertiesSheetListener.CaseInsensitiveMap getProperties()

Description copied from interface: RuleSheetListener

Return the rule sheet properties

Specified by:

getProperties in interface RuleSheetListener

getRuleSet

public org.drools.template.model.Package getRuleSet()

Description copied from interface: RuleSheetListener

Build the final ruleset as parsed.

Specified by:

getRuleSet in interface RuleSheetListener

addRule

protected void addRule(org.drools.template.model.Rule newRule)

Add a new rule to the current list of rules

Parameters:

rule -

startSheet

public void startSheet(String name)

Specified by:

startSheet in interface org.drools.template.parser.DataListener

finishSheet

public void finishSheet()

Specified by:

finishSheet in interface org.drools.template.parser.DataListener

newRow

public void newRow(int rowNumber,
                   int columns)

Specified by:

newRow in interface org.drools.template.parser.DataListener

newCell

public void newCell(int row,
                    int column,
                    String value,
                    int mergedColStart)

Specified by:

newCell in interface org.drools.template.parser.DataListener

preInitRuleTable

protected void preInitRuleTable(int row,
                                int column,
                                String value)

Called before rule table initialisation. Subclasses may override this method to do additional processing.

getCurrentRule

protected org.drools.template.model.Rule getCurrentRule()

postInitRuleTable

protected void postInitRuleTable(int row,
                                 int column,
                                 String value)

Called after rule table initialisation. Subclasses may override this method to do additional processing.