[HUDI-4165] Support Create/Drop/Show/Refresh Index Syntax for Spark SQL (#5761)

* Support Create/Drop/Show/Refresh Index Syntax for Spark SQL

hudi-common/src/main/java/org/apache/hudi/common/index/HoodieIndex.java

@@ -0,0 +1,119 @@
+/*
+ * 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.hudi.common.index;
+
+import java.util.Arrays;
+import java.util.Map;
+
+public class HoodieIndex {
+  private String indexName;
+  private String[] colNames;
+  private HoodieIndexType indexType;
+  private Map<String, Map<String, String>> colOptions;
+  private Map<String, String> options;
+
+  public HoodieIndex() {
+  }
+
+  public HoodieIndex(
+      String indexName,
+      String[] colNames,
+      HoodieIndexType indexType,
+      Map<String, Map<String, String>> colOptions,
+      Map<String, String> options) {
+    this.indexName = indexName;
+    this.colNames = colNames;
+    this.indexType = indexType;
+    this.colOptions = colOptions;
+    this.options = options;
+  }
+
+  public String getIndexName() {
+    return indexName;
+  }
+
+  public String[] getColNames() {
+    return colNames;
+  }
+
+  public HoodieIndexType getIndexType() {
+    return indexType;
+  }
+
+  public Map<String, Map<String, String>> getColOptions() {
+    return colOptions;
+  }
+
+  public Map<String, String> getOptions() {
+    return options;
+  }
+
+  public static Builder builder() {
+    return new Builder();
+  }
+
+  @Override
+  public String toString() {
+    return "HoodieIndex{"
+        + "indexName='" + indexName + '\''
+        + ", colNames='" + Arrays.toString(colNames) + '\''
+        + ", indexType=" + indexType
+        + ", colOptions=" + colOptions
+        + ", options=" + options
+        + '}';
+  }
+
+  public static class Builder {
+    private String indexName;
+    private String[] colNames;
+    private HoodieIndexType indexType;
+    private Map<String, Map<String, String>> colOptions;
+    private Map<String, String> options;
+
+    public Builder setIndexName(String indexName) {
+      this.indexName = indexName;
+      return this;
+    }
+
+    public Builder setColNames(String[] colNames) {
+      this.colNames = colNames;
+      return this;
+    }
+
+    public Builder setIndexType(String indexType) {
+      this.indexType = HoodieIndexType.of(indexType);
+      return this;
+    }
+
+    public Builder setColOptions(Map<String, Map<String, String>> colOptions) {
+      this.colOptions = colOptions;
+      return this;
+    }
+
+    public Builder setOptions(Map<String, String> options) {
+      this.options = options;
+      return this;
+    }
+
+    public HoodieIndex build() {
+      return new HoodieIndex(indexName, colNames, indexType, colOptions, options);
+    }
+  }
+}

hudi-common/src/main/java/org/apache/hudi/common/index/HoodieIndexType.java

@@ -0,0 +1,54 @@
+/*
+ * 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.hudi.common.index;
+
+import org.apache.hudi.exception.HoodieIndexException;
+
+import java.util.Arrays;
+
+public enum HoodieIndexType {
+  LUCENE((byte) 1);
+
+  private final byte type;
+
+  HoodieIndexType(byte type) {
+    this.type = type;
+  }
+
+  public byte getValue() {
+    return type;
+  }
+
+  public static HoodieIndexType of(byte indexType) {
+    return Arrays.stream(HoodieIndexType.values())
+        .filter(t -> t.type == indexType)
+        .findAny()
+        .orElseThrow(() ->
+            new HoodieIndexException("Unknown hoodie index type:" + indexType));
+  }
+
+  public static HoodieIndexType of(String indexType) {
+    return Arrays.stream(HoodieIndexType.values())
+        .filter(t -> t.name().equals(indexType.toUpperCase()))
+        .findAny()
+        .orElseThrow(() ->
+            new HoodieIndexException("Unknown hoodie index type:" + indexType));
+  }
+}