@tanstack/db-ivm/dist/cjs/operators/negate.cjs.map

Incremental View Maintenance for TanStack DB based on Differential Dataflow

{"version":3,"file":"negate.cjs","sources":["../../../src/operators/negate.ts"],"sourcesContent":["import { DifferenceStreamWriter, LinearUnaryOperator } from \"../graph.js\"\nimport { StreamBuilder } from \"../d2.js\"\nimport type { IStreamBuilder, PipedOperator } from \"../types.js\"\nimport type { MultiSet } from \"../multiset.js\"\n\n/**\n * Operator that negates the multiplicities in the input stream\n */\nexport class NegateOperator<T> extends LinearUnaryOperator<T, T> {\n  inner(collection: MultiSet<T>): MultiSet<T> {\n    return collection.negate()\n  }\n}\n\n/**\n * Negates the multiplicities in the input stream\n */\nexport function negate<T>(): PipedOperator<T, T> {\n  return (stream: IStreamBuilder<T>): IStreamBuilder<T> => {\n    const output = new StreamBuilder<T>(\n      stream.graph,\n      new DifferenceStreamWriter<T>()\n    )\n    const operator = new NegateOperator<T>(\n      stream.graph.getNextOperatorId(),\n      stream.connectReader(),\n      output.writer\n    )\n    stream.graph.addOperator(operator)\n    stream.graph.addStream(output.connectReader())\n    return output\n  }\n}\n"],"names":["LinearUnaryOperator","StreamBuilder","DifferenceStreamWriter"],"mappings":";;;;AAQO,MAAM,uBAA0BA,MAAAA,oBAA0B;AAAA,EAC/D,MAAM,YAAsC;AAC1C,WAAO,WAAW,OAAA;AAAA,EACpB;AACF;AAKO,SAAS,SAAiC;AAC/C,SAAO,CAAC,WAAiD;AACvD,UAAM,SAAS,IAAIC,GAAAA;AAAAA,MACjB,OAAO;AAAA,MACP,IAAIC,MAAAA,uBAAA;AAAA,IAA0B;AAEhC,UAAM,WAAW,IAAI;AAAA,MACnB,OAAO,MAAM,kBAAA;AAAA,MACb,OAAO,cAAA;AAAA,MACP,OAAO;AAAA,IAAA;AAET,WAAO,MAAM,YAAY,QAAQ;AACjC,WAAO,MAAM,UAAU,OAAO,cAAA,CAAe;AAC7C,WAAO;AAAA,EACT;AACF;;;"}