graphql.validation.rules.ScalarLeaves Maven / Gradle / Ivy
package graphql.validation.rules;
import graphql.Internal;
import graphql.language.Field;
import graphql.schema.GraphQLOutputType;
import graphql.validation.AbstractRule;
import graphql.validation.ValidationContext;
import graphql.validation.ValidationErrorCollector;
import static graphql.schema.GraphQLTypeUtil.isLeaf;
import static graphql.schema.GraphQLTypeUtil.simplePrint;
import static graphql.validation.ValidationErrorType.SubselectionNotAllowed;
import static graphql.validation.ValidationErrorType.SubselectionRequired;
@Internal
public class ScalarLeaves extends AbstractRule {
public ScalarLeaves(ValidationContext validationContext, ValidationErrorCollector validationErrorCollector) {
super(validationContext, validationErrorCollector);
}
@Override
public void checkField(Field field) {
GraphQLOutputType type = getValidationContext().getOutputType();
if (type == null) return;
if (isLeaf(type)) {
if (field.getSelectionSet() != null) {
String message = i18n(SubselectionNotAllowed, "ScalarLeaves.subselectionOnLeaf", simplePrint(type), field.getName());
addError(SubselectionNotAllowed, field.getSourceLocation(), message);
}
} else {
if (field.getSelectionSet() == null) {
String message = i18n(SubselectionRequired, "ScalarLeaves.subselectionRequired", simplePrint(type), field.getName());
addError(SubselectionRequired, field.getSourceLocation(), message);
}
}
}
}
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