14006930974

Committed 22 Mar 2025 08:35AM UTC coverage: 23.055%. Remained the same

Build # 14006930974

Build Type

push

github

Committed by

ljacqu

Commit Message

Add Nullable annotation next to return value in methods

Run Details

111 of 610 branches covered (18.2%)

Branch coverage included in aggregate %.

378 of 1511 relevant lines covered (25.02%)

1.28 hits per line

Source File
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0.0

/src/main/java/ch/jalu/fileduplicatefinder/config/ValueOrError.java

package ch.jalu.fileduplicatefinder.config;

import com.google.common.base.Preconditions;
import org.jetbrains.annotations.Nullable;

/**
 * Encapsulates a value or an error. Exactly one field is always non-null.
 *
 * @param <T> the value type
 */
public class ValueOrError<T> {

    private final @Nullable T value;
    private final @Nullable String errorReason;

    private ValueOrError(@Nullable T value, @Nullable String errorReason) {
        Preconditions.checkArgument(value != null ^ errorReason != null,
            "Value xor errorReason must be not null");
        this.value = value;
        this.errorReason = errorReason;
    }

    /**
     * Creates a new instance with the given value.
     *
     * @param value the result (not null)
     * @return instance with the value
     * @param <T> the value's type
     */
    public static <T> ValueOrError<T> forValue(T value) {
        return new ValueOrError<>(value, null);
    }

    /**
     * Creates a new instance with the given error reason.
     *
     * @param errorReason error detailing the issue with the conversion (not null)
     * @return instance with the error
     * @param <T> value or error type
     */
    public static <T> ValueOrError<T> forError(String errorReason) {
        return new ValueOrError<>(null, errorReason);
    }

    /**
     * @return the value; null if there is an error, otherwise guaranteed not-null
     */
    public @Nullable T getValue() {
        return value;
    }

    /**
     * @return the error; null if there is a value, otherwise guaranteed not-null
     */
    public @Nullable String getErrorReason() {
        return errorReason;
    }
}

1	package ch.jalu.fileduplicatefinder.config;
2
3	import com.google.common.base.Preconditions;
4	import org.jetbrains.annotations.Nullable;
5
6	/**
7	* Encapsulates a value or an error. Exactly one field is always non-null.
8	*
9	* @param <T> the value type
10	*/
11	public class ValueOrError<T> {
12
13	private final @Nullable T value;
14	private final @Nullable String errorReason;
15
16	private ValueOrError(@Nullable T value, @Nullable String errorReason) {	×
17	Preconditions.checkArgument(value != null ^ errorReason != null,	×
18	"Value xor errorReason must be not null");
19	this.value = value;	×
20	this.errorReason = errorReason;	×
21	}	×
22
23	/**
24	* Creates a new instance with the given value.
25	*
26	* @param value the result (not null)
27	* @return instance with the value
28	* @param <T> the value's type
29	*/
30	public static <T> ValueOrError<T> forValue(T value) {
31	return new ValueOrError<>(value, null);	×
32	}
33
34	/**
35	* Creates a new instance with the given error reason.
36	*
37	* @param errorReason error detailing the issue with the conversion (not null)
38	* @return instance with the error
39	* @param <T> value or error type
40	*/
41	public static <T> ValueOrError<T> forError(String errorReason) {
42	return new ValueOrError<>(null, errorReason);	×
43	}
44
45	/**
46	* @return the value; null if there is an error, otherwise guaranteed not-null
47	*/
48	public @Nullable T getValue() {
49	return value;	×
50	}
51
52	/**
53	* @return the error; null if there is a value, otherwise guaranteed not-null
54	*/
55	public @Nullable String getErrorReason() {
56	return errorReason;	×
57	}
58	}

ljacqu / FileDuplicateFinder / 14006930974

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