[FLINK-34157][table] Migrate FlinkLimit0RemoveRule to java

flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/plan/rules/logical/FlinkLimit0RemoveRule.java

@@ -0,0 +1,70 @@
+/*
+ * 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.flink.table.planner.plan.rules.logical;
+
+import org.apache.calcite.plan.RelOptRuleCall;
+import org.apache.calcite.plan.RelRule;
+import org.apache.calcite.rel.RelNode;
+import org.apache.calcite.rel.core.Sort;
+import org.apache.calcite.rex.RexLiteral;
+import org.immutables.value.Value;
+
+/** Planner rule that rewrites `limit 0` to empty [[org.apache.calcite.rel.core.Values]]. */
+@Value.Enclosing
+public class FlinkLimit0RemoveRule
+        extends RelRule<FlinkLimit0RemoveRule.FlinkLimit0RemoveRuleConfig> {
+
+    public static final FlinkLimit0RemoveRule INSTANCE =
+            FlinkLimit0RemoveRule.FlinkLimit0RemoveRuleConfig.DEFAULT.toRule();
+
+    private FlinkLimit0RemoveRule(FlinkLimit0RemoveRuleConfig config) {
+        super(config);
+    }
+
+    @Override
+    public boolean matches(RelOptRuleCall call) {
+        Sort sort = call.rel(0);
+        return sort.fetch != null && RexLiteral.intValue(sort.fetch) == 0;
+    }
+
+    @Override
+    public void onMatch(RelOptRuleCall call) {
+        Sort sort = call.rel(0);
+        RelNode emptyValues = call.builder().values(sort.getRowType()).build();
+        call.transformTo(emptyValues);
+
+        // New plan is absolutely better than old plan.
+        call.getPlanner().prune(sort);
+    }
+
+    /** Rule configuration. */
+    @Value.Immutable(singleton = false)
+    public interface FlinkLimit0RemoveRuleConfig extends RelRule.Config {
+        FlinkLimit0RemoveRule.FlinkLimit0RemoveRuleConfig DEFAULT =
+                ImmutableFlinkLimit0RemoveRule.FlinkLimit0RemoveRuleConfig.builder()
+                        .build()
+                        .withOperandSupplier(b0 -> b0.operand(Sort.class).anyInputs())
+                        .withDescription("FlinkLimit0RemoveRule");
+
+        @Override
+        default FlinkLimit0RemoveRule toRule() {
+            return new FlinkLimit0RemoveRule(this);
+        }
+    }
+}