webbeta / Serializer

import es.webbeta.serializer.base.MetadataProperty;

import es.webbeta.serializer.base.MetadataAccessor;

import es.webbeta.serializer.base.ParentFieldData;

import es.webbeta.serializer.base.SerializerMetadataProvider;

import es.webbeta.serializer.metadata.*;

import es.webbeta.serializer.type.FieldAccessType;

import org.yaml.snakeyaml.Yaml;

import java.util.*;

public class SerializerYamlMetadataProvider implements SerializerMetadataProvider {

    private MetadataAccessor metadataAccessor;

    private Map<String, Metadata> metadatas;

    public SerializerYamlMetadataProvider(MetadataAccessor metadataAccessor) {

        this.metadataAccessor = metadataAccessor;

        metadatas = new HashMap<>();

    }

    private void initializeMetadata(Class<?> klass) {

        if (metadatas.containsKey(klass.getCanonicalName()))

            return;

        Yaml yaml = new Yaml();

        if (!metadataAccessor.hasMetadata(klass)) {

            putNullMetadata(klass);

            return;

        }

        String yamlFileContents = metadataAccessor.getMetadataContent(klass);

        Metadata metadata = MetadataConstructor.build(yaml.loadAs(yamlFileContents, Map.class));

        if (metadata == null || !metadata.appliesTo(klass.getCanonicalName())) {

            putNullMetadata(klass);

            return;

        }

        this.metadatas.put(klass.getCanonicalName(), metadata);

    }

    private void putNullMetadata(Class<?> klass) {

        this.metadatas.put(klass.getCanonicalName(), null);

    }

    private Boolean containsMetadata(Class<?> klass) {

        return metadatas.containsKey(klass.getCanonicalName()) &&

                metadatas.get(klass.getCanonicalName()) != null;

    }

    private Metadata getMetadata(Class<?> klass) {

        return metadatas.get(klass.getCanonicalName());

    }

    @Override

    public Boolean canProvide(Class<?> klass) {

        initializeMetadata(klass);

        return metadataAccessor.hasMetadata(klass) &&

                containsMetadata(klass);

    }

    @Override

    public String[] getGroupsByFieldName(Class<?> klass, String fieldName) {

        Metadata metadata = getMetadata(klass);

        MetadataProperty property = metadata.getMixedProperty(fieldName);

        return property.getGroups().toArray(new String[0]);

    }

    @Override

    public Boolean hasAccessType(Class<?> klass) {

        Metadata metadata = getMetadata(klass);

        return metadata.hasAccessType();

    }

    @Override

    public FieldAccessType getAccessType(Class<?> klass) {

        Metadata metadata = getMetadata(klass);

        return metadata.getAccessType();

    }

    @Override

    public Boolean hasPropertyAccessType(Class<?> klass, String propertyName) {

        Metadata metadata = getMetadata(klass);

        MetadataProperty property = metadata.getMixedProperty(propertyName);

        return property.hasAccessType();

    }

    @Override

    public FieldAccessType getPropertyAccessType(Class<?> klass, String propertyName) {

        Metadata metadata = getMetadata(klass);

        MetadataProperty property = metadata.getMixedProperty(propertyName);

        return property.getAccessType();

    }

    @Override

    public String getPropertyCustomGetterName(Class<?> klass, String propertyName) {

        Metadata metadata = getMetadata(klass);

        MetadataProperty property = metadata.getMixedProperty(propertyName);

        MetadataPropertyAccessor accessor = property.getAccessor();

        if (accessor == null || !accessor.hasGetter())

            return null;

        else

            return accessor.getGetter();

    }

    @Override

    public Boolean hasPropertySerializedName(Class<?> klass, String propertyName) {

        Metadata metadata = getMetadata(klass);

        MetadataProperty property = metadata.getMixedProperty(propertyName);

        return property.hasSerializedName();

    }

    @Override

    public String getPropertySerializedName(Class<?> klass, String propertyName) {

        Metadata metadata = getMetadata(klass);

        MetadataProperty property = metadata.getMixedProperty(propertyName);

        return property.getSerializedName();

    }

    @Override

    public Boolean isVirtualProperty(Class<?> klass, String propertyName) {

        Metadata metadata = getMetadata(klass);

        MetadataProperty property = metadata.getMixedProperty(propertyName);

        return property instanceof MetadataVirtualProperty;

    }