org.mapstruct.ap.internal.model.DefaultMappingExclusionProvider Maven / Gradle / Ivy

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/*
 * Copyright MapStruct Authors.
 *
 * Licensed under the Apache License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0
 */
package org.mapstruct.ap.internal.model;

import java.util.regex.Pattern;
import javax.lang.model.element.Name;
import javax.lang.model.element.TypeElement;

import org.mapstruct.ap.spi.MappingExclusionProvider;

/**
 * The default implementation of the {@link MappingExclusionProvider} service provider interface.
 *
 * With the default implementation, MapStruct will not consider classes in the {@code java} and {@code javax} package
 * as source / target for an automatic sub-mapping. The only exception is the {@link java.util.Collection},
 * {@link java.util.Map} and {@link java.util.stream.Stream} types.
 *
 * @author Filip Hrisafov
 * @since 1.2
 */
class DefaultMappingExclusionProvider implements MappingExclusionProvider {
    private static final Pattern JAVA_JAVAX_PACKAGE = Pattern.compile( "^javax?\\..*" );

    @Override
    public boolean isExcluded(TypeElement typeElement) {
        Name name = typeElement.getQualifiedName();
        return name.length() != 0 && isFullyQualifiedNameExcluded( name );
    }

    protected boolean isFullyQualifiedNameExcluded(Name name) {
        return JAVA_JAVAX_PACKAGE.matcher( name ).matches();
    }
}