Generates html for a subset of jdoc records
        describing objects of specific schema

def generate_html(self, jdoc, schema, schemas):
        '''Generates html for a subset of jdoc records
        describing objects of specific schema'''

        params = {'functions': sorted([j for j in jdoc \
                   if (j.schema_name == schema.object_name and j.object_type \
                       in ['function', 'procedure', 'trigger'])], \
                                      key=lambda x: x.object_name),
                   'tables': sorted([j for j in jdoc \
                   if (j.schema_name == schema.object_name and j.object_type \
                       in ['table', 'view', 'materialized view', 'foreign table'])], \
                                    key=lambda x: x.object_name),
                   'schema_name': schema.object_name,
                   'schemas': sorted(schemas, key=lambda x: x.object_name),
                   'project': self.project_name,
                   'title': '{}: schema {}'.format(self.project_name,
                                                   schema.object_name)}
        template = self.lookup.get_template('schema.mako')
        html = template.render_unicode(**params)

        return html