[Stmt] Support new show functions syntax to make user search function more conveniently (#2800)

SHOW [FULL] [BUILTIN] FUNCTIONS [IN|FROM db] [LIKE 'function_pattern'];
2020-01-20 14:14:42 +08:00
parent 0f829ca4c4
commit 58ff952837
13 changed files with 362 additions and 112 deletions
--- a/fe/src/test/java/org/apache/doris/analysis/ShowFunctionsStmtTest.java
+++ b/fe/src/test/java/org/apache/doris/analysis/ShowFunctionsStmtTest.java
@ -0,0 +1,92 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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.apache.doris.analysis;
+
+import mockit.Expectations;
+import mockit.Mocked;
+import org.apache.doris.catalog.Catalog;
+import org.apache.doris.catalog.FakeCatalog;
+import org.apache.doris.common.AnalysisException;
+import org.apache.doris.common.UserException;
+import org.apache.doris.mysql.privilege.MockedAuth;
+import org.apache.doris.mysql.privilege.PaloAuth;
+import org.apache.doris.qe.ConnectContext;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+
+public class ShowFunctionsStmtTest {
+    @Mocked
+    private Analyzer analyzer;
+    private Catalog catalog;
+
+    @Mocked
+    private PaloAuth auth;
+    @Mocked
+    private ConnectContext ctx;
+    private FakeCatalog fakeCatalog;
+
+    @Rule
+    public ExpectedException expectedEx = ExpectedException.none();
+
+    @Before
+    public void setUp() {
+        fakeCatalog = new FakeCatalog();
+        catalog = AccessTestUtil.fetchAdminCatalog();
+        MockedAuth.mockedAuth(auth);
+        MockedAuth.mockedConnectContext(ctx, "root", "192.188.3.1");
+        FakeCatalog.setCatalog(catalog);
+
+        new Expectations() {
+            {
+                analyzer.getDefaultDb();
+                minTimes = 0;
+                result = "testDb";
+
+                analyzer.getCatalog();
+                minTimes = 0;
+                result = catalog;
+
+                analyzer.getClusterName();
+                minTimes = 0;
+                result = "testCluster";
+            }
+        };
+    }
+
+    @Test
+    public void testNormal() throws UserException {
+        ShowFunctionsStmt stmt = new ShowFunctionsStmt(null, true, true, "%year%", null);
+        stmt.analyze(analyzer);
+        Assert.assertEquals("SHOW FULL BUILTIN FUNCTIONS FROM `testDb` LIKE `%year%`", stmt.toString());
+    }
+
+    @Test
+    public void testUnsupportFilter() throws UserException {
+        SlotRef slotRef = new SlotRef(null, "Signature");
+        StringLiteral stringLiteral = new StringLiteral("year(DATETIME)");
+        BinaryPredicate binaryPredicate = new BinaryPredicate(BinaryPredicate.Operator.EQ, slotRef, stringLiteral);
+        ShowFunctionsStmt stmt = new ShowFunctionsStmt(null, true, true, null, binaryPredicate);
+        expectedEx.expect(AnalysisException.class);
+        expectedEx.expectMessage("Only support like 'function_pattern' syntax.");
+        stmt.analyze(analyzer);
+    }
+
+}