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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.solr.handler.extraction;

/** The various Solr Parameters names to use when extracting content. */
public interface ExtractingParams {

  /** Map all generated attribute names to field names with lowercase and underscores. */
  public static final String LOWERNAMES = "lowernames";

  /** if true, ignore TikaException (give up to extract text but index meta data) */
  public static final String IGNORE_TIKA_EXCEPTION = "ignoreTikaException";

  /**
   * The param prefix for mapping Tika metadata to Solr fields.
   *
   * To map a field, add a name like:
   *
   * 
fmap.title=solr.title
   *
   * In this example, the tika "title" metadata value will be added to a Solr field named
   * "solr.title"
   */
  public static final String MAP_PREFIX = "fmap.";

  /**
   * Pass in literal values to be added to the document, as in
   *
   *    *  literal.myField=Foo
   * 
   */
  public static final String LITERALS_PREFIX = "literal.";

  /**
   * Restrict the extracted parts of a document to be indexed by passing in an XPath expression. All
   * content that satisfies the XPath expr. will be passed to the {@link SolrContentHandler}.
   *
   * See Tika's docs for what the extracted document looks like.
   *
   * @see #CAPTURE_ELEMENTS
   */
  public static final String XPATH_EXPRESSION = "xpath";

  /** Only extract and return the content, do not index it. */
  public static final String EXTRACT_ONLY = "extractOnly";

  /** Content output format if extractOnly is true. Default is "xml", alternative is "text". */
  public static final String EXTRACT_FORMAT = "extractFormat";

  /**
   * Capture attributes separately according to the name of the element, instead of just adding them
   * to the string buffer
   */
  public static final String CAPTURE_ATTRIBUTES = "captureAttr";

  /**
   * Literal field values will by default override other values such as metadata and content. Set
   * this to false to revert to pre-4.0 behaviour
   */
  public static final String LITERALS_OVERRIDE = "literalsOverride";

  /**
   * Capture the specified fields (and everything included below it that isn't capture by some other
   * capture field) separately from the default. This is different then the case of passing in an
   * XPath expression.
   *
   * 
The Capture field is based on the localName returned to the {@link SolrContentHandler} by
   * Tika, not to be confused by the mapped field. The field name can then be mapped into the index
   * schema.
   *
   * 
For instance, a Tika document may look like:
   *
   * 
   *  <html>
   *    ...
   *    <body>
   *      <p>some text here.  <div>more text</div></p>
   *      Some more text
   *    </body>
   * 
   *
   * By passing in the p tag, you could capture all P tags separately from the rest of the t Thus,
   * in the example, the capture of the P tag would be: "some text here. more text"
   */
  public static final String CAPTURE_ELEMENTS = "capture";

  /** The type of the stream. If not specified, Tika will use mime type detection. */
  public static final String STREAM_TYPE = "stream.type";

  /**
   * Optional. The file name. If specified, Tika can take this into account while guessing the MIME
   * type.
   */
  public static final String RESOURCE_NAME = "resource.name";

  /**
   * Optional. The password for this resource. Will be used instead of the rule based password
   * lookup mechanisms
   */
  public static final String RESOURCE_PASSWORD = "resource.password";

  /**
   * Optional. If specified, the prefix will be prepended to all Metadata, such that it would be
   * possible to setup a dynamic field to automatically capture it
   */
  public static final String UNKNOWN_FIELD_PREFIX = "uprefix";

  /**
   * Optional. If specified and the name of a potential field cannot be determined, the default
   * Field specified will be used instead.
   */
  public static final String DEFAULT_FIELD = "defaultField";

  /**
   * Optional. If specified, loads the file as a source for password lookups for Tika encrypted
   * documents.
   *
   * File format is Java properties format with one key=value per line. The key is evaluated as a
   * regex against the file name, and the value is the password The rules are evaluated top-bottom,
   * i.e. the first match will be used If you want a fallback password to be always used, supply a
   * .*=<defaultmypassword> at the end
   */
  public static final String PASSWORD_MAP_FILE = "passwordsFile";
}