通过GraphQL使用参数将动态字符串数组存储为Neo4j中的节点属性,可以按照以下步骤进行操作:
type Mutation {
createNode(input: NodeInput!): Node
}
input NodeInput {
id: ID!
name: String!
dynamicStrings: [String!]!
}
neo4j-driver
)来连接和操作Neo4j数据库。以下是一个示例的resolver实现:const { v1: neo4j } = require('neo4j-driver');
const driver = neo4j.driver('bolt://localhost:7687', neo4j.auth.basic('neo4j', 'password'));
const resolvers = {
Mutation: {
createNode: async (_, { input }) => {
const session = driver.session();
try {
const result = await session.run(
`
MERGE (n:Node {id: $id})
SET n.name = $name, n.dynamicStrings = $dynamicStrings
RETURN n
`,
{
id: input.id,
name: input.name,
dynamicStrings: input.dynamicStrings,
}
);
return result.records[0].get('n').properties;
} finally {
session.close();
}
},
},
};
createNode
mutation。例如,使用Apollo Client发送mutation请求的示例代码:import { ApolloClient, InMemoryCache, gql } from '@apollo/client';
const client = new ApolloClient({
uri: 'http://localhost:4000/graphql',
cache: new InMemoryCache(),
});
const createNodeMutation = gql`
mutation CreateNode($input: NodeInput!) {
createNode(input: $input) {
id
name
dynamicStrings
}
}
`;
const input = {
id: '1',
name: 'Node 1',
dynamicStrings: ['string1', 'string2', 'string3'],
};
client
.mutate({
mutation: createNodeMutation,
variables: { input },
})
.then(result => {
console.log(result.data.createNode);
})
.catch(error => {
console.error(error);
});
这样,通过GraphQL使用参数将动态字符串数组存储为Neo4j中的节点属性的过程就完成了。请注意,以上示例中的代码仅供参考,实际应用中可能需要根据具体情况进行调整和优化。
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