Properly delegate method calls for EscapingParameterSource.

Closes #1681
See #1682

Author: schauder

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/repository/query/EscapingParameterSource.java

@@ -51,4 +51,20 @@ public Object getValue(String paramName) throws IllegalArgumentException {
 		}
 		return value;
 	}
+
+
+	@Override
+	public int getSqlType(String paramName) {
+		return parameterSource.getSqlType(paramName);
+	}
+
+	@Override
+	public String getTypeName(String paramName) {
+		return parameterSource.getTypeName(paramName);
+	}
+
+	@Override
+	public String[] getParameterNames() {
+		return parameterSource.getParameterNames();
+	}
 }

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/repository/query/EscapingParameterSourceTest.java

@@ -0,0 +1,112 @@
+/*
+ * Copyright 2023 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
+ *
+ *      https://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.jdbc.repository.query;
+
+import static org.assertj.core.api.Assertions.*;
+
+import java.sql.Types;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+import org.springframework.data.relational.core.dialect.Escaper;
+import org.springframework.data.relational.core.query.ValueFunction;
+import org.springframework.jdbc.core.namedparam.MapSqlParameterSource;
+
+/**
+ * Tests for the {@link EscapingParameterSource}.
+ *
+ * @author Jens Schauder
+ */
+class EscapingParameterSourceTest {
+
+	MapSqlParameterSource delegate = new MapSqlParameterSource();
+	Escaper escaper = Escaper.of('x');
+	EscapingParameterSource escapingParameterSource = new EscapingParameterSource(delegate, escaper);
+
+	@Nested
+	class EmptyParameterSource {
+
+		@Test
+		void getParameterNames() {
+			assertThat(escapingParameterSource.getParameterNames()).isEmpty();
+		}
+
+		@Test
+		void hasValue() {
+			assertThat(escapingParameterSource.hasValue("one")).isFalse();
+		}
+
+		@Test
+		void getNonExistingValue() {
+			assertThatIllegalArgumentException().isThrownBy(() -> escapingParameterSource.getValue("two"));
+		}
+
+	}
+
+	@Nested
+	class NonEmptyParameterSource {
+
+		@BeforeEach
+		void before() {
+			delegate.addValue("one", 1, Types.INTEGER);
+			delegate.registerTypeName("one", "integer");
+			delegate.addValue("needsEscaping", (ValueFunction<String>) escaper -> escaper.escape("a%a") + "%", Types.VARCHAR);
+			delegate.registerTypeName("needsEscaping", "varchar");
+		}
+
+		@Test
+		void getParameterNames() {
+			assertThat(escapingParameterSource.getParameterNames()).containsExactlyInAnyOrder("one", "needsEscaping");
+		}
+
+		@Test
+		void hasValue() {
+			assertThat(escapingParameterSource.hasValue("one")).isTrue();
+			assertThat(escapingParameterSource.hasValue("two")).isFalse();
+		}
+
+		@Test
+		void getNonExistingValue() {
+			assertThatIllegalArgumentException().isThrownBy(() -> escapingParameterSource.getValue("two"));
+		}
+
+		@Test
+		void getValue() {
+			assertThat(escapingParameterSource.getValue("one")).isEqualTo(1);
+		}
+
+		@Test
+		void getEscapedValue() {
+			assertThat(escapingParameterSource.getValue("needsEscaping")).isEqualTo("ax%a%");
+		}
+
+		@Test
+		void getSqlType() {
+
+			assertThat(escapingParameterSource.getSqlType("one")).isEqualTo(Types.INTEGER);
+			assertThat(escapingParameterSource.getSqlType("needsEscaping")).isEqualTo(Types.VARCHAR);
+		}
+
+		@Test
+		void getTypeName() {
+
+			assertThat(escapingParameterSource.getTypeName("one")).isEqualTo("integer");
+			assertThat(escapingParameterSource.getTypeName("needsEscaping")).isEqualTo("varchar");
+		}
+	}
+}