import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
@Override
public <I extends Io> I io(final Io.Builder<I> builder) {
    if (builder.requiresVersion(GryoVersion.V1_0) || builder.requiresVersion(GraphSONVersion.V1_0))
        return (I) builder.graph(this).onMapper(mapper -> mapper.addRegistry(TinkerIoRegistryV1d0.instance())).create();
    else if (builder.requiresVersion(GraphSONVersion.V2_0))   // there is no gryo v2
        return (I) builder.graph(this).onMapper(mapper -> mapper.addRegistry(TinkerIoRegistryV2d0.instance())).create();
    else
        return (I) builder.graph(this).onMapper(mapper -> mapper.addRegistry(TinkerIoRegistryV3d0.instance())).create();
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
/**
 * This method is not supported for this reader.
 *
 * @throws UnsupportedOperationException when called.
 */
@Override
public Iterator<Vertex> readVertices(final InputStream inputStream,
                                     final Function<Attachable<Vertex>, Vertex> vertexAttachMethod,
                                     final Function<Attachable<Edge>, Edge> edgeAttachMethod,
                                     final Direction attachEdgesOfThisDirection) throws IOException {
    throw Io.Exceptions.readerFormatIsForFullGraphSerializationOnly(this.getClass());
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
/**
 * This method is not supported for this reader.
 *
 * @throws UnsupportedOperationException when called.
 */
@Override
public Vertex readVertex(final InputStream inputStream, final Function<Attachable<Vertex>, Vertex> vertexAttachMethod,
                         final Function<Attachable<Edge>, Edge> edgeAttachMethod,
                         final Direction attachEdgesOfThisDirection) throws IOException {
    throw Io.Exceptions.readerFormatIsForFullGraphSerializationOnly(this.getClass());
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
protected void loadModern(SqlgGraph sqlgGraph) {
    Io.Builder<GraphSONIo> builder = GraphSONIo.build(GraphSONVersion.V3_0);
    final GraphReader reader = sqlgGraph.io(builder).reader().create();
    try (final InputStream stream = AbstractGremlinTest.class.getResourceAsStream("/tinkerpop-modern-v3d0.json")) {
        reader.readGraph(stream, sqlgGraph);
    } catch (IOException e) {
        Assert.fail(e.getMessage());
    }
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
protected void loadGratefulDead(SqlgGraph sqlgGraph) {
    Io.Builder<GraphSONIo> builder = GraphSONIo.build(GraphSONVersion.V3_0);
    final GraphReader reader = sqlgGraph.io(builder).reader().create();
    try (final InputStream stream = AbstractGremlinTest.class.getResourceAsStream("/grateful-dead-v3d0.json")) {
        reader.readGraph(stream, sqlgGraph);
    } catch (IOException e) {
        Assert.fail(e.getMessage());
    }
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
@Override
public <I extends Io> I io(final Io.Builder<I> builder) {
    if (builder.requiresVersion(GryoVersion.V1_0) || builder.requiresVersion(GraphSONVersion.V1_0))
        return (I) builder.graph(this).onMapper(mapper -> mapper.addRegistry(SqlgIoRegistry.instance())).create();
    else if (builder.requiresVersion(GraphSONVersion.V2_0))   // there is no gryo v2
        return (I) builder.graph(this).onMapper(mapper -> mapper.addRegistry(SqlgIoRegistry.instance())).create();
    else
        return (I) builder.graph(this).onMapper(mapper -> mapper.addRegistry(SqlgIoRegistryV3.instance())).create();
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
@Override
public Io create() {
    calledCreate++;
    return mock(Io.class);
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
@Override
public <I extends Io> I io(final Io.Builder<I> builder) {
    return (I) builder.graph(this).onMapper(m -> m.addRegistry(BitsyIoRegistryV3d0.instance())).create();
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
public static Io.Builder<GryoIo> build() {
    return new Builder();
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
@Override
public Io.Builder<GryoIo> graph(final Graph g) {
    this.graph = g;
    return this;
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
public static Io.Builder<GraphSONIo> build() {
    return new Builder();
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
@Override
public Io.Builder<GraphSONIo> graph(final Graph g) {
    this.graph = g;
    return this;
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
/**
 * This method is not supported for this reader.
 *
 * @throws UnsupportedOperationException when called.
 */
@Override
public VertexProperty readVertexProperty(final InputStream inputStream,
                                         final Function<Attachable<VertexProperty>, VertexProperty> vertexPropertyAttachMethod) throws IOException {
    throw Io.Exceptions.readerFormatIsForFullGraphSerializationOnly(this.getClass());
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
/**
 * This method is not supported for this reader.
 *
 * @throws UnsupportedOperationException when called.
 */
@Override
public Property readProperty(final InputStream inputStream,
                             final Function<Attachable<Property>, Property> propertyAttachMethod) throws IOException {
    throw Io.Exceptions.readerFormatIsForFullGraphSerializationOnly(this.getClass());
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
public static Io.Builder<GraphMLIo> build() {
    return new Builder();
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
@Override
public Io.Builder<GraphMLIo> graph(final Graph g) {
    this.graph = g;
    return this;
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
@Override
public <I extends Io> I io(final Io.Builder<I> builder) {
    return (I) builder.graph(this).registry(TinkerIoRegistry.getInstance()).create();
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
@Override
public <I extends Io> I io(final Io.Builder<I> builder) {
    return (I) builder.graph(this).registry(TitanIoRegistry.INSTANCE).create();
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
@Override
public <I extends Io> I io(final Io.Builder<I> builder) {
    return getGraph().io(builder);
}
 

import org.apache.tinkerpop.gremlin.structure.io.Io; //导入依赖的package包/类
@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
public <I extends Io> I io(Builder<I> builder) {
    return (I) Graph.super.io(builder.onMapper(mb -> mb.addRegistry(OrientIoRegistry.getInstance())));
}