#75 - Add anonymous indexed bind markers.

Anonymous indexed bind markers come with a static placeholder symbol for all parameter occurrences and they are bound by index.

Original pull request: #84.

src/test/java/org/springframework/data/r2dbc/dialect/AnonymousBindMarkersUnitTests.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2019 the original author or authors.
+ *
+ * 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.springframework.data.r2dbc.dialect;
+
+import static org.assertj.core.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+import io.r2dbc.spi.Statement;
+
+import org.junit.Test;
+
+/**
+ * Unit tests for {@link AnonymousBindMarkers}.
+ *
+ * @author Mark Paluch
+ */
+public class AnonymousBindMarkersUnitTests {
+
+	@Test // gh-75
+	public void shouldCreateNewBindMarkers() {
+
+		BindMarkersFactory factory = BindMarkersFactory.anonymous("?");
+
+		BindMarkers bindMarkers1 = factory.create();
+		BindMarkers bindMarkers2 = factory.create();
+
+		assertThat(bindMarkers1.next().getPlaceholder()).isEqualTo("?");
+		assertThat(bindMarkers2.next().getPlaceholder()).isEqualTo("?");
+	}
+
+	@Test // gh-75
+	public void shouldBindByIndex() {
+
+		Statement statement = mock(Statement.class);
+
+		BindMarkers bindMarkers = BindMarkersFactory.anonymous("?").create();
+
+		BindMarker first = bindMarkers.next();
+		BindMarker second = bindMarkers.next();
+
+		second.bind(statement, "foo");
+		first.bindNull(statement, Object.class);
+
+		verify(statement).bindNull(0, Object.class);
+		verify(statement).bind(1, "foo");
+	}
+}