/**
* Create new instance.
*
* @param field field
* @param value value
*/
private EqualsRule(final String field, final String value) {
super();
if (!RESOLVER.isField(field)) {
throw new IllegalArgumentException(
"Invalid EQUALS rule - " + field + " is not a supported field");
}
this.field = field;
this.value = value;
}
/** {@inheritDoc} */
@SuppressWarnings({"rawtypes", "unchecked"})
public boolean evaluate(final LogData event, Map matches) {
Object p2 = RESOLVER.getValue(field, event);
boolean result = (p2 != null) && p2.toString().equalsIgnoreCase(value);
if (result && matches != null) {
Set entries = (Set) matches.get(field.toUpperCase());
if (entries == null) {
entries = new HashSet();
matches.put(field.toUpperCase(), entries);
}
entries.add(value);
}
return result;
}
/** * A Rule class which returns the result of performing equals against two strings. * * @author Scott Deboy ([email protected]) * @author Krzysztof Otrebski */ public class EqualsRule extends AbstractRule { /** Serialization ID. */ static final long serialVersionUID = 1712851553477517245L; /** Resolver. */ private static final LoggingEventFieldResolver RESOLVER = LoggingEventFieldResolver.getInstance(); /** Value. */ private final String value; /** Field. */ private final String field; /** * Create new instance. * * @param field field * @param value value */ private EqualsRule(final String field, final String value) { super(); if (!RESOLVER.isField(field)) { throw new IllegalArgumentException( "Invalid EQUALS rule - " + field + " is not a supported field"); } this.field = field; this.value = value; } /** * Create new instance from top two elements of stack. * * @param stack stack * @return new instance */ public static Rule getRule(final Stack<Object> stack) { if (stack.size() < 2) { throw new IllegalArgumentException( "Invalid EQUALS rule - expected two parameters but received " + stack.size()); } String p2 = stack.pop().toString(); String p1 = stack.pop().toString(); return getRule(p1, p2); } /** * Create new instance. * * @param p1 field, special treatment for level and timestamp. * @param p2 value * @return new instance */ public static Rule getRule(final String p1, final String p2) { if (p1.equalsIgnoreCase(LoggingEventFieldResolver.LEVEL_FIELD)) { return LevelEqualsRule.getRule(p2); } else if (p1.equalsIgnoreCase(LoggingEventFieldResolver.TIMESTAMP_FIELD) || p1.equalsIgnoreCase(LoggingEventFieldResolver.DATE_FIELD)) { return TimestampEqualsRule.getRule(p2); } else if (p1.equalsIgnoreCase(LoggingEventFieldResolver.MARK_FIELD)) { return MarkEqualsRule.getRule(p2, false); } else { return new EqualsRule(p1, p2); } } /** {@inheritDoc} */ @SuppressWarnings({"rawtypes", "unchecked"}) public boolean evaluate(final LogData event, Map matches) { Object p2 = RESOLVER.getValue(field, event); boolean result = (p2 != null) && p2.toString().equalsIgnoreCase(value); if (result && matches != null) { Set entries = (Set) matches.get(field.toUpperCase()); if (entries == null) { entries = new HashSet(); matches.put(field.toUpperCase(), entries); } entries.add(value); } return result; } }
