io.sphere.internal.request.SphereResultRaw Maven / Gradle / Ivy
package io.sphere.internal.request;
import com.google.common.base.Function;
import io.sphere.client.exceptions.SphereBackendException;
import io.sphere.internal.util.Validation;
import net.jcip.annotations.Immutable;
import javax.annotation.Nonnull;
/** Raw result of a request to the Sphere backend, used internally by the Java client. */
@Immutable
public final class SphereResultRaw extends Validation {
private SphereResultRaw(T value, SphereBackendException exception) {
super(value, exception);
}
/** Creates a new successful result. */
public static SphereResultRaw success(T value) {
return new SphereResultRaw(value, null);
}
/** Creates a new erroneous result. */
public static SphereResultRaw error(SphereBackendException exception) {
return new SphereResultRaw(null, exception);
}
@Override public T getValue() {
if (!isSuccess()) throw getError();
return super.getValue();
}
/** If successful, transforms the success value. Otherwise does nothing. */
public SphereResultRaw transform(@Nonnull Function successFunc) {
return isSuccess() ?
SphereResultRaw.success(successFunc.apply(getValue())) :
SphereResultRaw.error(getError());
}
/** If error, creates a new error result of given type (doesn't transform anything, just changes the type).
* Otherwise throws an exception */
public SphereResultRaw castError() {
if (isSuccess()) throw new IllegalStateException("Can't call castError on a successful result.");
return SphereResultRaw.error(this.getError());
}
@Override
public String toString() {
return this.getClass().getCanonicalName() + "{" + super.toString() + "}";
}
}