Examples with ProjectLookup com.google.refine.LookupCacheManager.ProjectLookup used on opensource projects

Example 1 with ProjectLookup

use of com.google.refine.LookupCacheManager.ProjectLookup in project OpenRefine by OpenRefine.

the class Cross method call.

@Override
public Object call(Properties bindings, Object[] args) {
    if (1 <= args.length && args.length <= 3) {
        // 1st argument can take either value or cell(for backward compatibility)
        Object v = args[0];
        // if 2nd argument is omitted or set to "", use the current project name
        Object targetProjectName = "";
        boolean isCurrentProject = false;
        if (args.length < 2 || args[1].equals("")) {
            isCurrentProject = true;
        } else {
            targetProjectName = args[1];
        }
        // if 3rd argument is omitted or set to "", use the index column
        Object targetColumnName = args.length < 3 || args[2].equals("") ? INDEX_COLUMN_NAME : args[2];
        long targetProjectID;
        ProjectLookup lookup;
        if (v != null && targetProjectName instanceof String && targetColumnName instanceof String) {
            try {
                targetProjectID = isCurrentProject ? ((Project) bindings.get("project")).id : ProjectManager.singleton.getProjectID((String) targetProjectName);
            } catch (GetProjectIDException e) {
                return new EvalError(e.getMessage());
            }
            try {
                lookup = ProjectManager.singleton.getLookupCacheManager().getLookup(targetProjectID, (String) targetColumnName);
            } catch (LookupException e) {
                return new EvalError(e.getMessage());
            }
            if (v instanceof WrappedCell) {
                return lookup.getRows(((WrappedCell) v).cell.value);
            } else {
                return lookup.getRows(v);
            }
        }
    }
    return new EvalError(ControlFunctionRegistry.getFunctionName(this) + " expects a cell or value, a project name to look up (optional), and a column name in that project (optional)");
}