Created
May 11, 2020 21:53
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Attempt at creating graphile plugin
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const myOwnEscapeFn = (sql, sqlFragment, type) => { | |
const actualType = type.domainBaseType || type; | |
if (actualType.category === "N") { | |
if (actualType.id === 20) { | |
return sql.fragment `to_b64_extid(${sqlFragment})`; | |
} | |
if (["21" /* int2 */, | |
"23" /* int4 */, | |
"700" /* float4 */, | |
"701" /* float8 */ | |
].includes(actualType.id)) { | |
// No need for special handling | |
return sqlFragment; | |
} // Otherwise force the id to be a string | |
return sql.fragment `((${sqlFragment})::numeric)::text`; | |
} | |
return sqlFragment; | |
}; | |
exports.TestPlugin = function TestPlugin(builder) { | |
builder.hook("GraphQLObjectType:fields", function (fieldConfig, build, context) { | |
const { pgIntrospectionResultsByKind, // From PgIntrospectionPlugin | |
pgRegisterGqlTypeByTypeId, // From PgTypesPlugin | |
pgRegisterGqlInputTypeByTypeId, // From PgTypesPlugin | |
pg2GqlMapper, // From PgTypesPlugin | |
sql: sql, // From PgBasicsPlugin, this is equivalent to `require('pg-sql2')` but avoids multiple-module conflicts | |
graphql, } = build; | |
const addDataGeneratorForField = context.addDataGeneratorForField; | |
pgIntrospectionResultsByKind.class.forEach(table => { | |
const tablePgType = table.type; | |
addDataGeneratorForField("id", () => { | |
return { | |
pgQuery: queryBuilder => { | |
queryBuilder.selectIdentifiers2 = function (table) { | |
if (this.selectedIdentifiers) | |
return; | |
const primaryKey = table.primaryKeyConstraint; | |
if (!primaryKey) | |
return; | |
const primaryKeys = primaryKey.keyAttributes; | |
this.select(sql.fragment `json_build_array(${sql.join(primaryKeys.map(key => myOwnEscapeFn(sql, sql.fragment `${this.getTableAlias()}.${sql.identifier(key.name)}`, key.type)), ", ")})`, "__identifiers"); | |
this.selectedIdentifiers = true; | |
}; | |
queryBuilder.selectIdentifiers2(table); | |
} | |
}; | |
}); | |
}); | |
return fieldConfig; | |
}); | |
}; |
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