Example usage for org.springframework.data.mongodb.gridfs GridFsCriteria whereFilename

Introduction

In this page you can find the example usage for org.springframework.data.mongodb.gridfs GridFsCriteria whereFilename.

Prototype

public static GridFsCriteria whereFilename() 

Source Link

Document

Creates a GridFsCriteria for restrictions on the file's name.

Usage

From source file:piecework.content.concrete.GridFSContentProviderReceiver.java

private GridFsContentResource gridFsContentResource(GridFSFile current, String location) throws NotFoundError {
    // Retrieve in ascending order, then reverse versions - this allows us to count up in an intuition way,
    // setting version numbers
    if (location == null)
        return null;

    List<GridFSDBFile> files;

    Date uploadDate = null;/*w  w  w  .  ja  v a2  s. co m*/
    int indexOf = location.indexOf("?uploadDate=");
    if (indexOf != -1) {
        String uploadDateMillis = location.substring(indexOf + 12);
        uploadDate = new Date(Long.valueOf(uploadDateMillis));
        location = location.substring(0, indexOf);
        files = gridFsOperations.find(query(GridFsCriteria.whereFilename().is(location))
                .addCriteria(GridFsCriteria.where("uploadDate").is(uploadDate)));
    } else {
        files = gridFsOperations.find(query(GridFsCriteria.whereFilename().is(location))
                .with(new Sort(Sort.Direction.ASC, "uploadDate")));
    }
    List<Version> versions = new ArrayList<Version>();
    GridFSFile latest = current;
    if (files != null && !files.isEmpty()) {
        int count = 1;
        for (GridFSDBFile file : files) {
            DBObject dbObject = file.getMetaData();
            Object createDateObj = dbObject != null ? dbObject.get(GridFsContentResource.LAST_MODIFIED) : null;
            Long createDate = createDateObj != null ? Long.class.cast(createDateObj) : Long.valueOf(0);
            Object createdByObj = dbObject != null ? dbObject.get(GridFsContentResource.LAST_MODIFIED_BY)
                    : null;
            String createdBy = createdByObj != null ? createdByObj.toString() : null;

            String versionId = file != null && file.getUploadDate() != null
                    ? file.getId().toString() + "?uploadDate=" + file.getUploadDate().getTime()
                    : null;
            String versionLocation = file != null && file.getUploadDate() != null
                    ? location + "?uploadDate=" + file.getUploadDate().getTime()
                    : null;

            versions.add(
                    new Version("" + count, createdBy, createDate.longValue(), versionId, versionLocation));
            if (current == null)
                latest = file;
            count++;
        }
    }

    if (latest == null)
        throw new NotFoundError();

    uploadDate = latest.getUploadDate();

    Collections.reverse(versions);
    return new GridFsContentResource(gridFsOperations, latest, location, uploadDate, versions);
}

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From source file:piecework.content.concrete.GridFsContentResource.java

@Override
public InputStream getInputStream() throws IOException {
    Query query = query(GridFsCriteria.whereFilename().is(location));
    if (uploadDate != null)
        query.addCriteria(GridFsCriteria.where("uploadDate").is(uploadDate));
    GridFSDBFile file = gridFsOperations.findOne(query);
    return file.getInputStream();
}

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