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添加 OptionalUtil#orElseNull 方法。

feature/net-util
ZhouXY108 2023-05-30 10:16:47 +08:00
parent dce24ef4ef
commit 6176f9ab71
2 changed files with 21 additions and 6 deletions
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15
src/main/java/xyz/zhouxy/plusone/commons/util/OptionalUtil.java
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@ -23,6 +23,8 @@ import java.util.OptionalLong;
import javax.annotation.Nullable; import javax.annotation.Nullable;
import com.google.common.annotations.Beta;
/** /**
* OptionalUtil * OptionalUtil
* *
@ -119,6 +121,19 @@ public class OptionalUtil {
return optionalOf(objectOptional.orElse(null)); return optionalOf(objectOptional.orElse(null));
} }
/**
* return the value of the optional object if present,
* otherwise {@code null}.
*
* @param <T> the class of the value
* @param optionalObj {@link Optional} object, which must be non-null.
* @return the value of the optional object if present, otherwise {@code null}.
*/
@Beta
public static <T> T orElseNull(Optional<T> optionalObj) {
return optionalObj.orElse(null);
}
private OptionalUtil() { private OptionalUtil() {
throw new IllegalStateException("Utility class"); throw new IllegalStateException("Utility class");
} }

12
src/test/java/xyz/zhouxy/plusone/commons/util/SimpleJdbcTemplateTests.java
View File

@ -97,12 +97,12 @@ class SimpleJdbcTemplateTests {
final String sql = "INSERT INTO test_table(id, created_by, create_time, updated_by, update_time, status) VALUES(?, ?, ?, ?, ?, ?)"; final String sql = "INSERT INTO test_table(id, created_by, create_time, updated_by, update_time, status) VALUES(?, ?, ?, ?, ?, ?)";
final List<Object[]> params = recordList.stream() final List<Object[]> params = recordList.stream()
.map(r -> new Object[] { .map(r -> new Object[] {
r.getValueAsString("id").orElse(null), OptionalUtil.orElseNull(r.getValueAsString("id")),
r.getValueAsString("created_by").orElse(null), OptionalUtil.orElseNull(r.getValueAsString("created_by")),
r.getValueAsString("create_time").orElse(null), OptionalUtil.orElseNull(r.getValueAsString("create_time")),
r.getValueAsString("updated_by").orElse(null), OptionalUtil.orElseNull(r.getValueAsString("updated_by")),
r.getValueAsString("update_time").orElse(null), OptionalUtil.orElseNull(r.getValueAsString("update_time")),
r.getValueAsString("status").orElse(null) OptionalUtil.orElseNull(r.getValueAsString("status"))
}) })
.collect(Collectors.toList()); .collect(Collectors.toList());
try (Connection conn = this.dataSource.getConnection()) { try (Connection conn = this.dataSource.getConnection()) {