Add ShardingSphereMetaDataIdentifier and try to use in ShardingSphere…

…Table.columns (#33776)

* Add ShardingSphereMetaDataIdentifier and try to use in ShardingSphereTable.columns

* Add ShardingSphereMetaDataIdentifier and try to use in ShardingSphereTable.columns

infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/database/schema/model/ShardingSphereTable.java

@@ -18,10 +18,12 @@
 package org.apache.shardingsphere.infra.metadata.database.schema.model;
 
 import com.cedarsoftware.util.CaseInsensitiveMap;
+import lombok.AccessLevel;
 import lombok.EqualsAndHashCode;
 import lombok.Getter;
 import lombok.ToString;
 import org.apache.shardingsphere.infra.database.core.metadata.database.enums.TableType;
+import org.apache.shardingsphere.infra.metadata.identifier.ShardingSphereMetaDataIdentifier;
 
 import java.util.ArrayList;
 import java.util.Collection;
@@ -39,7 +41,8 @@ public final class ShardingSphereTable {
 
     private final String name;
 
-    private final Map<String, ShardingSphereColumn> columns;
+    @Getter(AccessLevel.NONE)
+    private final Map<ShardingSphereMetaDataIdentifier, ShardingSphereColumn> columns;
 
     private final Map<String, ShardingSphereIndex> indexes;
 
@@ -77,11 +80,11 @@ public ShardingSphereTable(final String name, final Collection<ShardingSphereCol
         this.type = type;
     }
 
-    private Map<String, ShardingSphereColumn> createColumns(final Collection<ShardingSphereColumn> columns) {
-        Map<String, ShardingSphereColumn> result = new CaseInsensitiveMap<>(columns.size(), 1F);
+    private Map<ShardingSphereMetaDataIdentifier, ShardingSphereColumn> createColumns(final Collection<ShardingSphereColumn> columns) {
+        Map<ShardingSphereMetaDataIdentifier, ShardingSphereColumn> result = new CaseInsensitiveMap<>(columns.size(), 1F);
         int index = 0;
         for (ShardingSphereColumn each : columns) {
-            result.put(each.getName(), each);
+            result.put(new ShardingSphereMetaDataIdentifier(each.getName()), each);
             columnNames.add(each.getName());
             if (each.isPrimaryKey()) {
                 primaryKeyColumns.add(each.getName());
@@ -116,7 +119,7 @@ private Map<String, ShardingSphereConstraint> createConstraints(final Collection
      * @param column column meta data
      */
     public void putColumn(final ShardingSphereColumn column) {
-        columns.put(column.getName(), column);
+        columns.put(new ShardingSphereMetaDataIdentifier(column.getName()), column);
     }
 
     /**
@@ -126,13 +129,13 @@ public void putColumn(final ShardingSphereColumn column) {
      * @return column meta data
      */
     public ShardingSphereColumn getColumn(final String columnName) {
-        return columns.get(columnName);
+        return columns.get(new ShardingSphereMetaDataIdentifier(columnName));
     }
 
     /**
-     * Get column meta data collection.
+     * Get column meta data list.
      *
-     * @return column meta data collection
+     * @return column meta data list
      */
     public Collection<ShardingSphereColumn> getColumnValues() {
         return columns.values();
@@ -145,7 +148,7 @@ public Collection<ShardingSphereColumn> getColumnValues() {
      * @return whether contains column or not
      */
     public boolean containsColumn(final String columnName) {
-        return null != columnName && columns.containsKey(columnName);
+        return null != columnName && columns.containsKey(new ShardingSphereMetaDataIdentifier(columnName));
     }
 
     /**

infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/identifier/DatabaseDialectMetaDataIdentifierHandler.java

@@ -0,0 +1,35 @@
+/*
+ * 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.shardingsphere.infra.metadata.identifier;
+
+import org.apache.shardingsphere.infra.database.core.spi.DatabaseTypedSPI;
+import org.apache.shardingsphere.infra.spi.annotation.SingletonSPI;
+
+/**
+ * Database dialect meta data identifier handler.
+ */
+@SingletonSPI
+public interface DatabaseDialectMetaDataIdentifierHandler extends DatabaseTypedSPI {
+
+    /**
+     * Whether identifier is case-sensitive.
+     *
+     * @return is case-sensitive or insensitive
+     */
+    boolean isCaseSensitive();
+}

infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/identifier/ShardingSphereMetaDataIdentifier.java

@@ -0,0 +1,78 @@
+/*
+ * 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.shardingsphere.infra.metadata.identifier;
+
+import com.cedarsoftware.util.CaseInsensitiveMap.CaseInsensitiveString;
+import org.apache.shardingsphere.infra.database.core.metadata.database.enums.QuoteCharacter;
+import org.apache.shardingsphere.infra.database.core.spi.DatabaseTypedSPILoader;
+import org.apache.shardingsphere.infra.database.core.type.DatabaseType;
+import org.apache.shardingsphere.sql.parser.statement.core.value.identifier.IdentifierValue;
+
+/**
+ * ShardingSphere meta data identifier.
+ */
+public final class ShardingSphereMetaDataIdentifier {
+
+    private final boolean isCaseSensitive;
+
+    private final CaseInsensitiveString value;
+
+    public ShardingSphereMetaDataIdentifier(final String value) {
+        isCaseSensitive = false;
+        this.value = new CaseInsensitiveString(value);
+    }
+
+    public ShardingSphereMetaDataIdentifier(final String value, final DatabaseType databaseType) {
+        isCaseSensitive = DatabaseTypedSPILoader.findService(DatabaseDialectMetaDataIdentifierHandler.class, databaseType)
+                .map(DatabaseDialectMetaDataIdentifierHandler::isCaseSensitive).orElse(false);
+        this.value = new CaseInsensitiveString(value);
+    }
+
+    public ShardingSphereMetaDataIdentifier(final IdentifierValue value) {
+        isCaseSensitive = QuoteCharacter.NONE != value.getQuoteCharacter();
+        this.value = new CaseInsensitiveString(value.getValue());
+    }
+
+    public ShardingSphereMetaDataIdentifier(final IdentifierValue value, final DatabaseType databaseType) {
+        isCaseSensitive = QuoteCharacter.NONE != value.getQuoteCharacter()
+                && DatabaseTypedSPILoader.findService(DatabaseDialectMetaDataIdentifierHandler.class, databaseType).map(DatabaseDialectMetaDataIdentifierHandler::isCaseSensitive).orElse(false);
+        this.value = new CaseInsensitiveString(value.getValue());
+    }
+
+    /**
+     * Get identifier value.
+     *
+     * @return identifier value
+     */
+    public String getValue() {
+        return value.toString();
+    }
+
+    @Override
+    public boolean equals(final Object obj) {
+        if (!(obj instanceof ShardingSphereMetaDataIdentifier)) {
+            return false;
+        }
+        return isCaseSensitive ? value.toString().equals(((ShardingSphereMetaDataIdentifier) obj).value.toString()) : value.equals(((ShardingSphereMetaDataIdentifier) obj).value);
+    }
+
+    @Override
+    public int hashCode() {
+        return isCaseSensitive ? value.toString().hashCode() : value.hashCode();
+    }
+}

kernel/sql-federation/executor/src/main/java/org/apache/shardingsphere/sqlfederation/executor/enumerable/EnumerableScanExecutor.java

@@ -168,7 +168,7 @@ private Enumerable<Object> createMemoryEnumerator(final ShardingSphereTableData
 
             @Override
             public Enumerator<Object> enumerator() {
-                return new MemoryRowEnumerator(tableData.getRows(), table.getColumns().values(), databaseType);
+                return new MemoryRowEnumerator(tableData.getRows(), table.getColumnValues(), databaseType);
             }
         };
     }

kernel/sql-federation/executor/src/test/java/org/apache/shardingsphere/sqlfederation/executor/enumerable/EnumerableScanExecutorTest.java

@@ -63,7 +63,7 @@ void assertExecuteWithStatistics() {
         when(schemaData.getTable("test")).thenReturn(tableData);
         ShardingSphereTable table = mock(ShardingSphereTable.class, RETURNS_DEEP_STUBS);
         when(table.getName()).thenReturn("test");
-        when(table.getColumns().values()).thenReturn(Collections.singleton(new ShardingSphereColumn("id", Types.INTEGER, true, false, false, false, true, false)));
+        when(table.getColumnValues()).thenReturn(Collections.singleton(new ShardingSphereColumn("id", Types.INTEGER, true, false, false, false, true, false)));
         Enumerable<Object> enumerable = new EnumerableScanExecutor(null, null, null, optimizerContext, executorContext, null, null, statistics)
                 .execute(table, mock(ScanExecutorContext.class));
         try (Enumerator<Object> actual = enumerable.enumerator()) {

proxy/frontend/type/mysql/src/main/java/org/apache/shardingsphere/proxy/frontend/mysql/command/query/binary/prepare/MySQLComStmtPrepareExecutor.java

@@ -155,7 +155,7 @@ private Collection<MySQLPacket> createProjectionColumnDefinition41Packets(final
             // TODO Calculate column definition flag for other projection types
             if (each instanceof ColumnProjection) {
                 result.add(Optional.ofNullable(schema.getTable(((ColumnProjection) each).getOriginalTable().getValue()))
-                        .map(table -> table.getColumns().get(((ColumnProjection) each).getOriginalColumn().getValue()))
+                        .map(table -> table.getColumn(((ColumnProjection) each).getOriginalColumn().getValue()))
                         .map(column -> createMySQLColumnDefinition41Packet(characterSet, calculateColumnDefinitionFlag(column), MySQLBinaryColumnType.valueOfJDBCType(column.getDataType())))
                         .orElseGet(() -> createMySQLColumnDefinition41Packet(characterSet, 0, MySQLBinaryColumnType.VAR_STRING)));
             } else {