Spring/spring-boot-data-geode
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Add null-safe asType(:Object, :Class) method to cast the given source Object into an instance of the given Class type.

Browse Source
This commit is contained in:
John Blum
2020-05-09 20:53:39 -07:00
parent 9dbd290322
commit 596ea093ba
2 changed files with 165 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
spring-geode/src/main/java/org/springframework/geode/core/util/ObjectUtils.java
View File

@@ -13,7 +13,6 @@
* or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package org.springframework.geode.core.util;
import static org.springframework.data.gemfire.util.ArrayUtils.nullSafeArray;
@@ -29,19 +28,25 @@ import java.util.Optional;
import java.util.function.Function;
import java.util.function.Predicate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.geode.pdx.PdxInstance;
import org.springframework.lang.NonNull;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.util.ReflectionUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The {@link ObjectUtils} class is an abstract utility class with operations for {@link Object objects}.
*
* @author John Blum
* @see java.lang.Object
* @see java.lang.reflect.Constructor
* @see java.lang.reflect.Field
* @see java.lang.reflect.Method
* @see org.apache.geode.pdx.PdxInstance
* @since 1.0.0
*/
@SuppressWarnings("all")
@@ -49,6 +54,37 @@ public abstract class ObjectUtils extends org.springframework.util.ObjectUtils {
private static final Logger logger = LoggerFactory.getLogger(ObjectUtils.class);
/**
* Tries to cast the given source {@link Object} into an instance of the given {@link Class} type.
*
* This method is cable of handling GemFire/Geode {@link PdxInstance} types.
*
* @param <T> desired {@link Class type} of the source {@link Object}.
* @param source {@link Object} to evaluate.
* @param type desired target {@link Class} type; must not be {@literal null}.
* @return the source {@link Object} cast to an instance of the given {@link Class} type.
* @throws IllegalArgumentException if the source {@link Object} is not an instance of
* the given {@link Class} type or the {@link Class} type is {@literal null}.
* @see org.apache.geode.pdx.PdxInstance
* @see java.lang.Class
* @see java.lang.Object
*/
public static @Nullable <T> T asType(@Nullable Object source, @NonNull Class<T> type) {
Assert.notNull(type, "Class type must not be null");
Object target = source instanceof PdxInstance
? ((PdxInstance) source).getObject()
: source;
return target == null ? null
: Optional.of(target)
.filter(type::isInstance)
.map(type::cast)
.orElseThrow(() -> newIllegalArgumentException("Object [%s] is not an instance of type [%s]",
nullSafeClassName(target), type.getName()));
}
/**
* Executes the given {@link ExceptionThrowingOperation} handling any checked {@link Exception} thrown during
* the normal execution of the operation by rethrowing an {@link IllegalStateException} wrapping