Method getProposal

src/runtime/join.ts:646–680

(multiIndex: MultiIndex, proposed, proposedIx, prefix)

  }

  getProposal(multiIndex: MultiIndex, proposed, proposedIx, prefix) {
    let proposalValues = [];
    let cardinality = 0;
    let resolvedOutputs = this.resolveOutputs(prefix);
    let projection = {};
    for(let branch of this.branches) {
      let branchPrefix = branch.resolve(prefix);
      let result = [branchPrefix];
      result = branch.execute(multiIndex, result);
      if(result.length) {
        for(let row of result) {
          let outputRow = [];
          for(let output of branch.outputs) {
            let value = toValue(output, row);
            outputRow.push(value);
          }
          if(!this.checkOutputs(resolvedOutputs, outputRow)) {
            continue;
          }
          let key = outputRow.join("|");
          if(projection[key] === undefined) {
            projection[key] = true;
            proposalValues.push(outputRow);
            cardinality++;
          }
        }
        if(this.exclusive) break;
      }
    }
    let proposal = this.proposalObject;
    proposal.providing = this.outputs;
    proposal.index = proposalValues;
    proposal.cardinality = cardinality;
    return proposal;
  }

  propose(multiIndex: MultiIndex, prefix) {
    // if either our inputs aren't resolved or our outputs are all filled