dbeaver/pro#3523 Add throwable function interface (#56)

Co-authored-by: Ivan Gagarkin <[email protected]>

modules/org.jkiss.utils/META-INF/MANIFEST.MF

@@ -14,5 +14,6 @@ Export-Package: org.jkiss.api,
  org.jkiss.utils.io,
  org.jkiss.utils.rest,
  org.jkiss.utils.time,
- org.jkiss.utils.xml
+ org.jkiss.utils.xml,
+ org.jkiss.utils.function
 Automatic-Module-Name: org.jkiss.utils

modules/org.jkiss.utils/src/org/jkiss/utils/function/ThrowableFunction.java

@@ -0,0 +1,33 @@
+/*
+ * DBeaver - Universal Database Manager
+ * Copyright (C) 2010-2024 DBeaver Corp and others
+ *
+ * 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.jkiss.utils.function;
+
+/**
+ * Throwable function.
+ */
+@FunctionalInterface
+public interface ThrowableFunction<I, O, E extends Exception> {
+
+    /**
+     * Applies this function to the given argument.
+     *
+     * @param input the function argument.
+     * @return the function result.
+     * @throws E if an exception occurs.
+     */
+    O apply(I input) throws E;
+}