org.babyfish.jimmer.apt.dto.AptDtoCompiler Maven / Gradle / Ivy

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A revolutionary ORM framework for both java and kotlin
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package org.babyfish.jimmer.apt.dto;

import com.squareup.javapoet.ClassName;
import org.babyfish.jimmer.apt.immutable.meta.ImmutableProp;
import org.babyfish.jimmer.apt.immutable.meta.ImmutableType;
import org.babyfish.jimmer.dto.compiler.DtoCompiler;
import org.babyfish.jimmer.dto.compiler.DtoFile;
import org.babyfish.jimmer.dto.compiler.DtoModifier;
import org.babyfish.jimmer.sql.GeneratedValue;

import javax.lang.model.element.Element;
import javax.lang.model.element.ElementKind;
import javax.lang.model.element.TypeElement;
import javax.lang.model.type.DeclaredType;
import javax.lang.model.util.Elements;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;

public class AptDtoCompiler extends DtoCompiler {

    private static final ClassName STRING = ClassName.get(String.class);

    private final Elements elements;

    private final DtoModifier defaultNullableInputModifier;

    public AptDtoCompiler(DtoFile dtoFile, Elements elements, DtoModifier defaultNullableInputModifier) throws IOException {
        super(dtoFile);
        this.elements = elements;
        this.defaultNullableInputModifier = defaultNullableInputModifier;
    }

    @Override
    public DtoModifier getDefaultNullableInputModifier() {
        return defaultNullableInputModifier;
    }

    @Override
    protected Collection getSuperTypes(ImmutableType baseType) {
        return baseType.getSuperTypes();
    }

    @Override
    protected Map getDeclaredProps(ImmutableType baseType) {
        return baseType.getDeclaredProps();
    }

    @Override
    protected Map getProps(ImmutableType baseType) {
        return baseType.getProps();
    }

    @Override
    protected ImmutableType getTargetType(ImmutableProp baseProp) {
        return baseProp.getTargetType();
    }

    @Override
    protected boolean isGeneratedValue(ImmutableProp baseProp) {
        return baseProp.toElement().getAnnotation(GeneratedValue.class) != null;
    }

    @Override
    protected boolean isStringProp(ImmutableProp baseProp) {
        return baseProp.getTypeName().equals(STRING);
    }

    @Override
    protected boolean isSameType(ImmutableProp baseProp1, ImmutableProp baseProp2) {
        return baseProp1.getClientTypeName().equals(baseProp2.getClientTypeName());
    }

    @Override
    protected List getEnumConstants(ImmutableProp baseProp) {
        if (baseProp.isList() || !baseProp.context().isEnum(baseProp.getElementType())) {
            return null;
        }
        Element element = ((DeclaredType)baseProp.toElement().getReturnType()).asElement();
        if (!(element instanceof TypeElement)) {
            return null;
        }
        List constants = new ArrayList<>();
        for (Element childElement : element.getEnclosedElements()) {
            if (childElement.getKind() == ElementKind.ENUM_CONSTANT) {
                constants.add(childElement.getSimpleName().toString());
            }
        }
        return constants;
    }

    @Override
    protected Integer getGenericTypeCount(String qualifiedName) {
        TypeElement typeElement = elements.getTypeElement(qualifiedName);
        if (typeElement == null) {
            return null;
        }
        return typeElement.getTypeParameters().size();
    }
}