Examples with VertexMapping com.baidu.hugegraph.entity.load.VertexMapping used on opensource projects

Example 1 with VertexMapping

use of com.baidu.hugegraph.entity.load.VertexMapping in project incubator-hugegraph-toolchain by apache.

the class LoadTaskService method buildVertexMappings.

private List<com.baidu.hugegraph.loader.mapping.VertexMapping> buildVertexMappings(GraphConnection connection, FileMapping fileMapping) {
    int connId = connection.getId();
    List<com.baidu.hugegraph.loader.mapping.VertexMapping> vMappings = new ArrayList<>();
    for (VertexMapping mapping : fileMapping.getVertexMappings()) {
        VertexLabelEntity vl = this.vlService.get(mapping.getLabel(), connId);
        List<String> idFields = mapping.getIdFields();
        Map<String, String> fieldMappings = mapping.fieldMappingToMap();
        com.baidu.hugegraph.loader.mapping.VertexMapping vMapping;
        if (vl.getIdStrategy().isCustomize()) {
            Ex.check(idFields.size() == 1, "When the ID strategy is CUSTOMIZED, you must " + "select a column in the file as the id");
            vMapping = new com.baidu.hugegraph.loader.mapping.VertexMapping(idFields.get(0), true);
        } else {
            assert vl.getIdStrategy().isPrimaryKey();
            List<String> primaryKeys = vl.getPrimaryKeys();
            Ex.check(idFields.size() >= 1 && idFields.size() == primaryKeys.size(), "When the ID strategy is PRIMARY_KEY, you must " + "select at least one column in the file as the " + "primary keys");
            /*
                 * The id column can be unfold into multi sub-ids only
                 * when primarykeys contains just one field
                 */
            boolean unfold = idFields.size() == 1;
            vMapping = new com.baidu.hugegraph.loader.mapping.VertexMapping(null, unfold);
            for (int i = 0; i < primaryKeys.size(); i++) {
                fieldMappings.put(idFields.get(i), primaryKeys.get(i));
            }
        }
        // set label
        vMapping.label(mapping.getLabel());
        // set field_mapping
        vMapping.mappingFields(fieldMappings);
        // set value_mapping
        vMapping.mappingValues(mapping.valueMappingToMap());
        // set selected
        vMapping.selectedFields().addAll(idFields);
        vMapping.selectedFields().addAll(fieldMappings.keySet());
        // set null_values
        Set<Object> nullValues = new HashSet<>();
        nullValues.addAll(mapping.getNullValues().getChecked());
        nullValues.addAll(mapping.getNullValues().getCustomized());
        vMapping.nullValues(nullValues);
        // TODO: Update strategies
        vMappings.add(vMapping);
    }
    return vMappings;
}

Example 2 with VertexMapping

use of com.baidu.hugegraph.entity.load.VertexMapping in project incubator-hugegraph-toolchain by apache.

the class FileMappingController method deleteVertexMapping.

@DeleteMapping("{id}/vertex-mappings/{vmid}")
public FileMapping deleteVertexMapping(@PathVariable("id") int id, @PathVariable("vmid") String vmid) {
    FileMapping mapping = this.service.get(id);
    if (mapping == null) {
        throw new ExternalException("load.file-mapping.not-exist.id", id);
    }
    VertexMapping vertexMapping = mapping.getVertexMapping(vmid);
    boolean removed = mapping.getVertexMappings().remove(vertexMapping);
    if (!removed) {
        throw new ExternalException("load.file-mapping.vertex-mapping.not-exist.id", vmid);
    }
    this.service.update(mapping);
    return mapping;
}

Example 3 with VertexMapping

use of com.baidu.hugegraph.entity.load.VertexMapping in project incubator-hugegraph-toolchain by apache.

the class FileMappingController method updateVertexMapping.

@PutMapping("{id}/vertex-mappings/{vmid}")
public FileMapping updateVertexMapping(@PathVariable("connId") int connId, @PathVariable("id") int id, @PathVariable("vmid") String vmId, @RequestBody VertexMapping newEntity) {
    FileMapping mapping = this.service.get(id);
    if (mapping == null) {
        throw new ExternalException("load.file-mapping.not-exist.id", id);
    }
    this.checkVertexMappingValid(connId, newEntity, mapping);
    VertexMapping vertexMapping = mapping.getVertexMapping(vmId);
    Ex.check(vertexMapping != null, "load.file-mapping.vertex-mapping.not-exist.id", vmId);
    newEntity.setId(vmId);
    Set<VertexMapping> vertexMappings = mapping.getVertexMappings();
    vertexMappings.remove(vertexMapping);
    vertexMappings.add(newEntity);
    this.service.update(mapping);
    return mapping;
}