AntPathMatcher.combine

Combine two patterns into a new pattern. <p>This implementation simply concatenates the two patterns, unless the first pattern contains a file extension match (e.g., {@code *.html}). In that case, the second pattern will be merged into the first. Otherwise, an {@code IllegalArgumentException} will be thrown. <h3>Examples</h3> <table border="1"> <tr><th>Pattern 1</th><th>Pattern 2</th><th>Result</th></tr> <tr><td>{@code null}</td><td>{@code null}</td><td>&nbsp;</td></tr> <tr><td>/hotels</td><td>{@code null}</td><td>/hotels</td></tr> <tr><td>{@code null}</td><td>/hotels</td><td>/hotels</td></tr> <tr><td>/hotels</td><td>/bookings</td><td>/hotels/bookings</td></tr> <tr><td>/hotels</td><td>bookings</td><td>/hotels/bookings</td></tr> <tr><td>/hotels/*</td><td>/bookings</td><td>/hotels/bookings</td></tr> <tr><td>/hotels/&#42;&#42;</td><td>/bookings</td><td>/hotels/&#42;&#42;/bookings</td></tr> <tr><td>/hotels</td><td>{hotel}</td><td>/hotels/{hotel}</td></tr> <tr><td>/hotels/*</td><td>{hotel}</td><td>/hotels/{hotel}</td></tr> <tr><td>/hotels/&#42;&#42;</td><td>{hotel}</td><td>/hotels/&#42;&#42;/{hotel}</td></tr> <tr><td>/*.html</td><td>/hotels.html</td><td>/hotels.html</td></tr> <tr><td>/*.html</td><td>/hotels</td><td>/hotels.html</td></tr> <tr><td>/*.html</td><td>/*.txt</td><td>{@code IllegalArgumentException}</td></tr> </table> @param pattern1 the first pattern @param pattern2 the second pattern @return the combination of the two patterns @throws IllegalArgumentException if the two patterns cannot be combined