import org.neo4j.procedure.Context; //导入依赖的package包/类
private Stream<CompilationMessage> validateInjectedTypes( VariableElement field )
{
    if ( skipContextWarnings )
    {
        return Stream.empty();
    }

    TypeMirror fieldType = field.asType();
    if ( !injectsAllowedTypes( fieldType ) )
    {
        return Stream
                .of( new ContextFieldWarning( field, "@%s usage warning: found type: <%s>, expected one of: %s",
                        Context.class.getName(), fieldType.toString(), types( SUPPORTED_TYPES ) ) );
    }

    return Stream.empty();
}
 

import org.neo4j.procedure.Context; //导入依赖的package包/类
@Override
public Stream<CompilationMessage> visitVariable( VariableElement field, Void ignored )
{
    if ( field.getAnnotation( Context.class ) != null )
    {
        return contextFieldVisitor.visitVariable( field, ignored );
    }
    return validateNonContextField( field );

}
 

import org.neo4j.procedure.Context; //导入依赖的package包/类
private Stream<CompilationMessage> validateModifiers( VariableElement field )
{
    if ( !hasValidModifiers( field ) )
    {
        return Stream.of( new FieldError( field,
                "@%s usage error: field %s#%s should be public, non-static and non-final", Context.class.getName(),
                field.getEnclosingElement().getSimpleName(), field.getSimpleName() ) );
    }

    return Stream.empty();
}