feat: support float32 type

README.adoc

@@ -133,7 +133,7 @@ sequence in the database.
 
 The `increment_size` for this pooled generator can not exceed 200.
 
-This is the **recommended configuration** for bit-reversed sequences: 
+This is the **recommended configuration** for bit-reversed sequences:
 
 [source, java]
 ----
@@ -318,6 +318,7 @@ This project offers the following Hibernate type mappings for specific Spanner c
 | `ARRAY<BOOL>`      | `com.google.cloud.spanner.hibernate.types.SpannerBoolArray`
 | `ARRAY<BYTES>`     | `com.google.cloud.spanner.hibernate.types.SpannerBytesArray`
 | `ARRAY<DATE>`      | `com.google.cloud.spanner.hibernate.types.SpannerDateArray`
+| `ARRAY<FLOAT32>`   | `com.google.cloud.spanner.hibernate.types.SpannerFloat32Array`
 | `ARRAY<FLOAT64>`   | `com.google.cloud.spanner.hibernate.types.SpannerFloat64Array`
 | `ARRAY<INT64>`     | `com.google.cloud.spanner.hibernate.types.SpannerInt64Array`
 | `ARRAY<JSON>`      | `com.google.cloud.spanner.hibernate.types.SpannerJsonArray`

google-cloud-spanner-hibernate-dialect/src/main/java/com/google/cloud/spanner/hibernate/types/SpannerFloat32Array.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2019-2024 Google LLC
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+package com.google.cloud.spanner.hibernate.types;
+
+import com.google.cloud.spanner.Type.Code;
+import java.util.List;
+
+/**
+ * Hibernate type definition for
+ *
+ * <pre>{@code ARRAY<FLOAT32>}</pre>
+ *
+ * .
+ */
+public class SpannerFloat32Array extends AbstractSpannerArrayType<Float, Float> {
+
+  @Override
+  public Code getSpannerTypeCode() {
+    return Code.FLOAT32;
+  }
+
+  @Override
+  public Float[] toArray(List<Float> value) {
+    return value == null ? null : value.toArray(new Float[0]);
+  }
+}

google-cloud-spanner-hibernate-dialect/src/main/java/com/google/cloud/spanner/hibernate/types/internal/ArrayJavaTypeDescriptor.java

@@ -141,6 +141,8 @@ private static Code getSpannerTypeCode(Class<?> javaType) {
       return Code.INT64;
     } else if (Double.class.isAssignableFrom(javaType)) {
       return Code.FLOAT64;
+    } else if (Float.class.isAssignableFrom(javaType)) {
+      return Code.FLOAT32;
     } else if (String.class.isAssignableFrom(javaType)) {
       return Code.STRING;
     } else if (UUID.class.isAssignableFrom(javaType)) {

google-cloud-spanner-hibernate-dialect/src/test/java/com/google/cloud/spanner/hibernate/it/SampleModelIT.java

@@ -476,6 +476,7 @@ public void testAllTypes() {
       saved.setColBytes("test".getBytes(StandardCharsets.UTF_8));
       saved.setColDate(LocalDate.of(2024, 2, 2));
       saved.setColFloat64(3.14d);
+      saved.setColFloat32(2.71f);
       saved.setColInt64(100L);
       saved.setColJson("{\"key\":\"value\"}");
       saved.setColNumeric(new BigDecimal("6.626"));
@@ -490,6 +491,7 @@ public void testAllTypes() {
       saved.setColDateArray(
           Arrays.asList(LocalDate.of(2000, 1, 1), null, LocalDate.of(1970, 1, 1)));
       saved.setColFloat64Array(Arrays.asList(3.14d, null, 6.626d));
+      saved.setColFloat32Array(Arrays.asList(2.71f, null, 6.022f));
       saved.setColInt64Array(Arrays.asList(1L, null, 2L));
       saved.setColJsonArray(Arrays.asList("{\"key\":\"value1\"}", null, "{\"key\":\"value2\"}"));
       saved.setColNumericArray(Arrays.asList(BigDecimal.ZERO, null, BigDecimal.TEN));
@@ -509,6 +511,7 @@ public void testAllTypes() {
       assertArrayEquals(saved.getColBytes(), fetched.getColBytes());
       assertEquals(saved.getColDate(), fetched.getColDate());
       assertEquals(saved.getColFloat64(), fetched.getColFloat64());
+      assertEquals(saved.getColFloat32(), fetched.getColFloat32());
       assertEquals(saved.getColInt64(), fetched.getColInt64());
       assertEquals(saved.getColJson(), fetched.getColJson());
       assertEquals(saved.getColNumeric(), fetched.getColNumeric());
@@ -521,6 +524,7 @@ public void testAllTypes() {
       }
       assertEquals(saved.getColDateArray(), fetched.getColDateArray());
       assertEquals(saved.getColFloat64Array(), fetched.getColFloat64Array());
+      assertEquals(saved.getColFloat32Array(), fetched.getColFloat32Array());
       assertEquals(saved.getColInt64Array(), fetched.getColInt64Array());
       assertEquals(saved.getColJsonArray(), fetched.getColJsonArray());
       assertEquals(saved.getColNumericArray(), fetched.getColNumericArray());

google-cloud-spanner-hibernate-dialect/src/test/java/com/google/cloud/spanner/hibernate/it/model/AllTypes.java

@@ -21,6 +21,7 @@
 import com.google.cloud.spanner.hibernate.types.SpannerBoolArray;
 import com.google.cloud.spanner.hibernate.types.SpannerBytesArray;
 import com.google.cloud.spanner.hibernate.types.SpannerDateArray;
+import com.google.cloud.spanner.hibernate.types.SpannerFloat32Array;
 import com.google.cloud.spanner.hibernate.types.SpannerFloat64Array;
 import com.google.cloud.spanner.hibernate.types.SpannerInt64Array;
 import com.google.cloud.spanner.hibernate.types.SpannerJsonArray;
@@ -49,6 +50,8 @@ public class AllTypes extends AbstractBaseEntity {
 
   private Double colFloat64;
 
+  private Float colFloat32;
+
   private Long colInt64;
 
   private String colJson;
@@ -71,6 +74,9 @@ public class AllTypes extends AbstractBaseEntity {
   @Type(SpannerFloat64Array.class)
   private List<Double> colFloat64Array;
 
+  @Type(SpannerFloat32Array.class)
+  private List<Float> colFloat32Array;
+
   @Type(SpannerInt64Array.class)
   private List<Long> colInt64Array;
 
@@ -127,6 +133,14 @@ public void setColFloat64(Double colFloat64) {
     this.colFloat64 = colFloat64;
   }
 
+  public Float getColFloat32() {
+    return colFloat32;
+  }
+
+  public void setColFloat32(Float colFloat32) {
+    this.colFloat32 = colFloat32;
+  }
+
   public Long getColInt64() {
     return colInt64;
   }
@@ -199,6 +213,14 @@ public void setColFloat64Array(List<Double> colFloat64Array) {
     this.colFloat64Array = colFloat64Array;
   }
 
+  public List<Float> getColFloat32Array() {
+    return colFloat32Array;
+  }
+
+  public void setColFloat32Array(List<Float> colFloat32Array) {
+    this.colFloat32Array = colFloat32Array;
+  }
+
   public List<Long> getColInt64Array() {
     return colInt64Array;
   }