hugegraph-python-client/src/pyhugegraph/api/schema_manage/index_label.py

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# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
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# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

import json


from pyhugegraph.api.common import HugeParamsBase
from pyhugegraph.utils.huge_decorator import decorator_params, decorator_create
from pyhugegraph.utils.exceptions import CreateError, RemoveError
from pyhugegraph.utils.util import check_if_authorized, check_if_success


class IndexLabel(HugeParamsBase):
    def __init__(self, graph_instance, session):
        super().__init__(graph_instance)
        self.__session = session

    @decorator_params
    def onV(self, vertex_label):
        self._parameter_holder.set("base_value", vertex_label)
        self._parameter_holder.set("base_type", "VERTEX_LABEL")
        return self

    @decorator_params
    def onE(self, edge_label):
        self._parameter_holder.set("base_value", edge_label)
        self._parameter_holder.set("base_type", "EDGE_LABEL")
        return self

    @decorator_params
    def by(self, *args):
        if "fields" not in self._parameter_holder.get_keys():
            self._parameter_holder.set("fields", set())
        s = self._parameter_holder.get_value("fields")
        for item in args:
            s.add(item)
        return self

    @decorator_params
    def secondary(self):
        self._parameter_holder.set("index_type", "SECONDARY")
        return self

    @decorator_params
    def range(self):
        self._parameter_holder.set("index_type", "RANGE")
        return self

    @decorator_params
    def Search(self):
        self._parameter_holder.set("index_type", "SEARCH")
        return self

    @decorator_params
    def ifNotExist(self):
        url = (
            f"{self._host}/graphs/{self._graph_name}/schema/indexlabels/"
            f'{self._parameter_holder.get_value("name")}'
        )
        response = self.__session.get(url, auth=self._auth, headers=self._headers)
        if response.status_code == 200 and check_if_authorized(response):
            self._parameter_holder.set("not_exist", False)
        return self

    @decorator_create
    def create(self):
        dic = self._parameter_holder.get_dic()
        data = {}
        data["name"] = dic["name"]
        data["base_type"] = dic["base_type"]
        data["base_value"] = dic["base_value"]
        data["index_type"] = dic["index_type"]
        data["fields"] = list(dic["fields"])
        url = f"{self._host}/graphs/{self._graph_name}/schema/indexlabels"
        response = self.__session.post(
            url, data=json.dumps(data), auth=self._auth, headers=self._headers
        )
        self.clean_parameter_holder()
        error = CreateError(
            f'CreateError: "create IndexLabel failed", Detail "{str(response.content)}"'
        )
        if check_if_success(response, error):
            return f'create IndexLabel success, Deatil: "{str(response.content)}"'
        return None

    @decorator_params
    def remove(self):
        name = self._parameter_holder.get_value("name")
        url = f"{self._host}/graphs/{self._graph_name}/schema/indexlabels/{name}"
        response = self.__session.delete(url, auth=self._auth, headers=self._headers)
        self.clean_parameter_holder()
        error = RemoveError(
            f'RemoveError: "remove IndexLabel failed", Detail "{str(response.content)}"'
        )
        if check_if_success(response, error):
            return f'remove IndexLabel success, Deatil: "{str(response.content)}"'
        return None