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Java Object Document Mapper for MongoDB
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package org.mongodb.morphia.query.validation;
import org.mongodb.morphia.mapping.MappedField;
import org.mongodb.morphia.query.FilterOperator;
import java.util.List;
import static java.lang.String.format;
import static org.mongodb.morphia.query.FilterOperator.IN;
import static org.mongodb.morphia.query.validation.CollectionTypeValidator.typeIsIterableOrArrayOrMap;
/**
* Checks if the value can have the {@code FilterOperator.IN} operator applied to it.
*/
public final class InOperationValidator extends OperationValidator {
private static final InOperationValidator INSTANCE = new InOperationValidator();
private InOperationValidator() {
}
/**
* Get the instance.
*
* @return the Singleton instance of this validator
*/
public static InOperationValidator getInstance() {
return INSTANCE;
}
@Override
protected FilterOperator getOperator() {
return IN;
}
@Override
protected void validate(final MappedField mappedField, final Object value, final List validationFailures) {
if (value == null) {
validationFailures.add(new ValidationFailure(format("For an $in operation, value cannot be null.")));
} else if (!typeIsIterableOrArrayOrMap(value.getClass())) {
validationFailures.add(new ValidationFailure(format("For a $in operation, value '%s' should be a List or array or Map. "
+ "Instead it was a: %s",
value, value.getClass()
)));
}
}
}