Examples of org.apache.lucene.index.IndexReader.deleteDocuments()

Class org.apache.lucene.index.IndexReader

Examples of org.apache.lucene.index.IndexReader.deleteDocuments()

org.apache.lucene.index.IndexReader.deleteDocuments()
Deletes all documents that have a given term indexed. This is useful if one uses a document field to hold a unique ID string for the document. Then to delete such a document, one merely constructs a term with the appropriate field and the unique ID string as its text and passes it to this method. See {@link #deleteDocument(int)} for information about when this deletion will become effective. @return the number of documents deleted @throws StaleReaderException if the index has changedsince this reader was opened @throws CorruptIndexException if the index is corrupt @throws LockObtainFailedException if another writerhas this index open (write.lock could not be obtained) @throws IOException if there is a low-level IO error

        try {
            reader = IndexReader.open(indexFilePath);
            LOG.log(Level.FINE,
                    "LuceneCatalog: remove document from index for product: ["
                            + product.getProductId() + "]");
            reader.deleteDocuments(new Term("product_id", product
                    .getProductId()));
        } catch (IOException e) {
            LOG.log(Level.WARNING, "Exception removing product: ["
                    + product.getProductName() + "] from index: Message: "
                    + e.getMessage());

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    try {
      reader = IndexReader.open(indexFilePath);
      LOG.log(Level.FINE,
          "LuceneCatalog: remove document from index for product: ["
              + product.getProductId() + "]");
      reader.deleteDocuments(new Term("product_id", product.getProductId()));
    } catch (IOException e) {
      LOG.log(Level.WARNING, "Exception removing product: ["
          + product.getProductName() + "] from index: Message: "
          + e.getMessage());
      throw new CatalogException(e.getMessage());

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        try {
            reader = IndexReader.open(idxFilePath);
            LOG.log(Level.FINE,
                    "LuceneWorkflowEngine: remove document from index for workflow instance: ["
                            + inst.getId() + "]");
            reader.deleteDocuments(new Term("workflow_inst_id", inst.getId()));
        } catch (IOException e) {
            LOG
                    .log(Level.WARNING,
                            "Exception removing workflow instance: ["
                                    + inst.getId() + "] from index: Message: "

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        try {
            reader = IndexReader.open(indexFilePath);
            LOG.log(Level.FINE,
                    "LuceneCatalog: remove document from index for product: ["
                            + product.getProductId() + "]");
            reader.deleteDocuments(new Term("product_id", product
                    .getProductId()));
        } catch (IOException e) {
            LOG.log(Level.WARNING, "Exception removing product: ["
                    + product.getProductName() + "] from index: Message: "
                    + e.getMessage());

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    try {
      Directory directory = FSDirectory.getDirectory("index", false);
      IndexReader reader = IndexReader.open(directory);


      Term term = new Term("path", args[0]);
      int deleted = reader.deleteDocuments(term);


      System.out.println("deleted " + deleted +
        " documents containing " + term);


      // one can also delete documents by their internal id:

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                if (website != null) {
                    tWebsite = IndexUtil.getTerm(
                            FieldConstants.WEBSITE_HANDLE, website.getHandle());
                }
                if (tWebsite != null) {
                    reader.deleteDocuments(tWebsite);
                } else {
                    Term all =
                            IndexUtil.getTerm(FieldConstants.CONSTANT,
                            FieldConstants.CONSTANT_V);
                    reader.deleteDocuments(all);

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                    reader.deleteDocuments(tWebsite);
                } else {
                    Term all =
                            IndexUtil.getTerm(FieldConstants.CONSTANT,
                            FieldConstants.CONSTANT_V);
                    reader.deleteDocuments(all);
                }
            }
        } catch (IOException e) {
            mLogger.info("Problems deleting doc from index", e);
        } finally {

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        IndexReader reader = beginDeleting();
        try {
            if (reader != null) {
                Term term = new Term(FieldConstants.ID, data.getId());
                reader.deleteDocuments(term);
            }
        } catch (IOException e) {
            mLogger.error("Error deleting doc from index", e);
        } finally {
            endDeleting();

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                }
                Term tHandle =
                        IndexUtil.getTerm(FieldConstants.WEBSITE_HANDLE, handle);
                
                if (tHandle != null) {
                    reader.deleteDocuments(tHandle);
                }
            }
        } catch (IOException e) {
            mLogger.info("Problems deleting doc from index", e);
        } finally {

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        IndexReader reader = beginDeleting();
        try {
            if (reader != null) {
                Term term = new Term(FieldConstants.ID, data.getId());
                reader.deleteDocuments(term);
            }
        } catch (IOException e) {
            mLogger.error("Error deleting doc from index", e);
        } finally {
            endDeleting();

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