Mercurial > code > home > repos > streamed-graph
annotate src/Layout.ts @ 103:f12feced00ce
WIP rewriting Layout
| author | drewp@bigasterisk.com |
|---|---|
| date | Sat, 12 Mar 2022 00:42:00 -0800 |
| parents | src/tabulate.ts@26c55d5d5202 |
| children | 1aea03d306af |
| rev | line source |
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1 // Organize graph data into tables (column orders, etc) for the view layer. |
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2 |
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3 import Immutable from "immutable"; // mostly using this for the builtin equals() testing, since NamedNode(x)!=NamedNode(x) |
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4 import { |
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5 DataFactory, |
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6 NamedNode, |
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7 Quad, |
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8 Quad_Object, |
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9 Store, |
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10 Term, |
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11 Util, |
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12 } from "n3"; |
| 103 | 13 import { ViewConfig } from "./ViewConfig"; |
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14 |
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15 const { namedNode } = DataFactory; |
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16 |
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17 // // import ns from 'n3/src/IRIs'; |
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18 // // const { rdf } = ns; |
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19 |
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20 type UriSet = Immutable.Set<NamedNode>; |
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21 export type TypeToSubjs = Immutable.Map<NamedNode, UriSet>; |
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22 |
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23 // https://github.com/rdfjs/N3.js/issues/265 |
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24 if ((NamedNode.prototype as any).hashCode === undefined) { |
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25 (NamedNode.prototype as any).hashCode = () => 0; |
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26 } |
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27 |
| 103 | 28 interface ColumnHeader { |
| 29 rdfType?: NamedNode; // could be more than one column that introduces an rdf:type for a join | |
| 30 pred: NamedNode; | |
| 31 } | |
| 32 interface AlignedTable { | |
| 33 columnHeaders: ColumnHeader[]; | |
| 34 rows: (Term | null)[][]; // each row is 1 wider than columnHeaders since the 1st element is the subject for that row | |
| 35 } | |
| 36 interface FreeStatements { | |
| 37 statements: Quad[]; | |
| 38 } | |
| 39 export interface LayoutResult { | |
| 40 sections: (AlignedTable | FreeStatements)[]; | |
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41 } |
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42 |
| 103 | 43 export class Layout { |
| 44 constructor(public viewConfig?: ViewConfig) {} | |
| 45 plan(graph: Store): LayoutResult { | |
| 46 const ungrouped: Quad[] = []; | |
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47 |
| 103 | 48 graph.forEach( |
| 49 (q: Quad) => { | |
| 50 ungrouped.push(q); | |
| 51 }, | |
| 52 null, | |
| 53 null, | |
| 54 null, | |
| 55 null | |
| 56 ); | |
| 57 return { sections: [{ statements: ungrouped }] }; | |
| 58 } | |
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59 } |
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60 |
| 103 | 61 // function getType(graph: Store, subj: NamedNode): NamedNode | null { |
| 62 // let subjType: NamedNode | null = null; | |
| 63 | |
| 64 // graph.forObjects( | |
| 65 // (o: Quad_Object) => { | |
| 66 // subjType = o as NamedNode; | |
| 67 // }, | |
| 68 // subj, | |
| 69 // rdf.type, | |
| 70 // null | |
| 71 // ); | |
| 72 // return subjType; | |
| 73 // } | |
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74 |
| 103 | 75 // // When there are multiple types, an arbitrary one is used. |
| 76 // export function groupByRdfType( | |
| 77 // graph: Store | |
| 78 // ): { | |
| 79 // byType: TypeToSubjs; | |
| 80 // typesPresent: NamedNode[]; | |
| 81 // untypedSubjs: NamedNode[]; | |
| 82 // } { | |
| 83 // let byType: TypeToSubjs = Immutable.Map(); | |
| 84 // let untyped: UriSet = Immutable.Set(); // subjs | |
| 85 // const internSubjs = new Map<string, NamedNode>(); | |
| 86 // graph.forEach( | |
| 87 // (q) => { | |
| 88 // if (!Util.isNamedNode(q.subject)) { | |
| 89 // throw new Error("unsupported " + q.subject.value); | |
| 90 // } | |
| 91 // const subj = q.subject as NamedNode; | |
| 92 | |
| 93 // const subjType = getType(graph, subj); | |
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94 |
| 103 | 95 // if (subjType !== null) { |
| 96 // // (subj, rdf:type, subjType) in graph | |
| 97 // const oldKeys = Array.from(byType.keys()); | |
| 98 // const oldVal = byType.get(subjType, Immutable.Set<NamedNode>()); | |
| 99 // const newVal = oldVal.add(subj); | |
| 100 // byType = byType.set(subjType, newVal); | |
| 101 // } else { | |
| 102 // untyped = untyped.add(subj); | |
| 103 // } | |
| 104 // }, | |
| 105 // null, | |
| 106 // null, | |
| 107 // null, | |
| 108 // null | |
| 109 // ); | |
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110 |
| 103 | 111 // const typesPresent = Array.from(byType.keys()); |
| 112 // typesPresent.sort(); | |
| 113 | |
| 114 // const untypedSubjs = Array.from(untyped.values()); | |
| 115 // untypedSubjs.sort(); | |
| 116 // return { | |
| 117 // byType: byType, | |
| 118 // typesPresent: typesPresent, | |
| 119 // untypedSubjs: untypedSubjs, | |
| 120 // }; | |
| 121 // } | |
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122 |
| 103 | 123 // export function predsForSubj(graph: Store, typeUri: NamedNode): NamedNode[] { |
| 124 // const predsSet: Set<NamedNode> = new Set(); | |
| 125 // graph.forEach( | |
| 126 // (q: Quad) => { | |
| 127 // predsSet.add(q.predicate as NamedNode); | |
| 128 // }, | |
| 129 // typeUri, | |
| 130 // null, | |
| 131 // null, | |
| 132 // null | |
| 133 // ); | |
| 134 // const preds = Array.from(predsSet.values()); | |
| 135 // preds.sort(); | |
| 136 // return preds; | |
| 137 // } | |
| 138 | |
| 139 // interface ISP { | |
| 140 // subj: NamedNode; | |
| 141 // pred: NamedNode; | |
| 142 // } | |
| 143 // const SP = Immutable.Record<ISP>({ | |
| 144 // subj: new NamedNode(""), | |
| 145 // pred: new NamedNode(""), | |
| 146 // }); | |
| 147 | |
| 148 // // One table of rows with a common rdf:type. | |
| 149 // export class MultiSubjsTypeBlockLayout { | |
| 150 // subjs: NamedNode[]; | |
| 151 // preds: NamedNode[]; | |
| 152 // graphCells: Immutable.Map<ISP, Immutable.Set<Term>>; | |
| 153 // constructor(graph: Store, byType: TypeToSubjs, table: TableDesc) { | |
| 154 // const subjSet = byType.get(table.primary); | |
| 155 // this.subjs = subjSet ? Array.from(subjSet) : []; | |
| 156 // this.subjs.sort(); | |
| 157 | |
| 158 // let preds = Immutable.Set<NamedNode>(); | |
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159 |
| 103 | 160 // this.graphCells = Immutable.Map<ISP, Immutable.Set<Term>>().withMutations( |
| 161 // (mutGraphCells) => { | |
| 162 // this.subjs.forEach((subj: NamedNode) => { | |
| 163 // graph.forEach( | |
| 164 // (q: Quad) => { | |
| 165 // if (!Util.isNamedNode(q.predicate)) { | |
| 166 // throw new Error(); | |
| 167 // } | |
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168 |
| 103 | 169 // const pred = q.predicate as NamedNode; |
| 170 // if (pred.equals(rdf.type)) { | |
| 171 // // the whole block is labeled with the type | |
| 172 // return; | |
| 173 // } | |
| 174 // preds = preds.add(pred); | |
| 175 // const cellKey = this.makeCellKey(subj, pred); | |
| 176 // mutGraphCells.set( | |
| 177 // cellKey, | |
| 178 // mutGraphCells.get(cellKey, Immutable.Set<Term>()).add(q.object) | |
| 179 // ); | |
| 180 // }, | |
| 181 // subj, | |
| 182 // null, | |
| 183 // null, | |
| 184 // null | |
| 185 // ); | |
| 186 // }); | |
| 187 // } | |
| 188 // ); | |
| 189 // this.preds = Array.from(preds); | |
| 190 // this.preds.splice(this.preds.indexOf(rdf.type), 1); | |
| 191 // // also pull out label, which should be used on 1st column | |
| 192 // this.preds.sort(); | |
| 193 // } | |
| 194 | |
| 195 // makeCellKey(subj: NamedNode, pred: NamedNode): ISP { | |
| 196 // return SP({ | |
| 197 // subj: subj, | |
| 198 // pred: pred, | |
| 199 // }); | |
| 200 // } | |
| 201 // } |