IGNITE-6141 JDBC: add basic support for BLOB and CLOB types (#11492)

Co-authored-by: rkondakov <rkondakov@gridgain.com>

modules/clients/src/test/java/org/apache/ignite/internal/jdbc2/JdbcAbstractDmlStatementSelfTest.java

@@ -20,9 +20,11 @@
 import java.io.Serializable;
 import java.io.UnsupportedEncodingException;
 import java.sql.Blob;
+import java.sql.Clob;
 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.SQLException;
+import java.util.Arrays;
 import java.util.Collections;
 import org.apache.ignite.cache.QueryEntity;
 import org.apache.ignite.cache.query.annotations.QuerySqlField;
@@ -53,7 +55,7 @@ public abstract class JdbcAbstractDmlStatementSelfTest extends GridCommonAbstrac
         CFG_URL_PREFIX + "cache=" + DEFAULT_CACHE_NAME + "@modules/clients/src/test/config/jdbc-bin-config.xml";
 
     /** SQL SELECT query for verification. */
-    static final String SQL_SELECT = "select _key, id, firstName, lastName, age, data from Person";
+    static final String SQL_SELECT = "select _key, id, firstName, lastName, age, data, text from Person";
 
     /** Alias for _key */
     private static final String KEY_ALIAS = "key";
@@ -112,6 +114,7 @@ final CacheConfiguration binaryCacheConfig() {
         e.addQueryField("firstName", String.class.getName(), null);
         e.addQueryField("lastName", String.class.getName(), null);
         e.addQueryField("data", byte[].class.getName(), null);
+        e.addQueryField("text", String.class.getName(), null);
 
         cache.setQueryEntities(Collections.singletonList(e));
 
@@ -189,6 +192,18 @@ static String str(byte[] arr) {
         }
     }
 
+    /**
+     * @param clob Clob.
+     */
+    static String str(Clob clob) {
+        try {
+            return clob.getSubString(1, (int)clob.length());
+        }
+        catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
     /**
      * Person.
      */
@@ -213,6 +228,10 @@ static class Person implements Serializable {
         @QuerySqlField
         private final byte[] data;
 
+        /** CLOB data. */
+        @QuerySqlField
+        private final String text;
+
         /**
          * @param id ID.
          * @param firstName First name.
@@ -229,6 +248,7 @@ static class Person implements Serializable {
             this.lastName = lastName;
             this.age = age;
             this.data = getBytes(lastName);
+            this.text = firstName + " " + lastName;
         }
 
         /** {@inheritDoc} */
@@ -241,6 +261,8 @@ static class Person implements Serializable {
             if (id != person.id) return false;
             if (age != person.age) return false;
             if (firstName != null ? !firstName.equals(person.firstName) : person.firstName != null) return false;
+            if (data != null ? !Arrays.equals(data, person.data) : person.data != null) return false;
+            if (text != null ? !text.equals(person.text) : person.text != null) return false;
             return lastName != null ? lastName.equals(person.lastName) : person.lastName == null;
 
         }
@@ -251,6 +273,8 @@ static class Person implements Serializable {
             result = 31 * result + (firstName != null ? firstName.hashCode() : 0);
             result = 31 * result + (lastName != null ? lastName.hashCode() : 0);
             result = 31 * result + age;
+            result = 31 * result + (data != null ? Arrays.hashCode(data) : 0);
+            result = 31 * result + (text != null ? text.hashCode() : 0);
             return result;
         }
     }

modules/clients/src/test/java/org/apache/ignite/internal/jdbc2/JdbcAbstractUpdateStatementSelfTest.java

@@ -24,10 +24,10 @@
  */
 public abstract class JdbcAbstractUpdateStatementSelfTest extends JdbcAbstractDmlStatementSelfTest {
     /** SQL query to populate cache. */
-    private static final String ITEMS_SQL = "insert into Person(_key, id, firstName, lastName, age, data) values " +
-        "('p1', 1, 'John', 'White', 25, RAWTOHEX('White')), " +
-        "('p2', 2, 'Joe', 'Black', 35, RAWTOHEX('Black')), " +
-        "('p3', 3, 'Mike', 'Green', 40, RAWTOHEX('Green'))";
+    private static final String ITEMS_SQL = "insert into Person(_key, id, firstName, lastName, age, data, text) values " +
+        "('p1', 1, 'John', 'White', 25, RAWTOHEX('White'), 'John White'), " +
+        "('p2', 2, 'Joe', 'Black', 35, RAWTOHEX('Black'), 'Joe Black'), " +
+        "('p3', 3, 'Mike', 'Green', 40, RAWTOHEX('Green'), 'Mike Green')";
 
     /** {@inheritDoc} */
     @Override protected void beforeTest() throws Exception {

modules/clients/src/test/java/org/apache/ignite/internal/jdbc2/JdbcBlobTest.java

@@ -113,6 +113,9 @@ public void testGetBytes() throws Exception {
         res = blob.getBytes(1, 0);
         assertEquals(0, res.length);
 
+        blob = new JdbcBlob(new byte[0]);
+        assertEquals(0, blob.getBytes(1, 0).length);
+
         blob.free();
 
         try {