content: /**
   * 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.schema;
  
  import java.util.Map;
  import java.util.HashMap;
  
  /**
   * @version $Id: FieldProperties.java 1145645 2011-07-12 16:12:49Z rmuir $
   * 
   * @lucene.internal
   */
  public abstract class FieldProperties {
  
    // use a bitfield instead of many different boolean variables since
    // many of the variables are independent or semi-independent.
  
    // bit values for boolean field properties.
    protected final static int INDEXED             = 0x00000001;
    protected final static int TOKENIZED           = 0x00000002;
    protected final static int STORED              = 0x00000004;
    protected final static int BINARY              = 0x00000008;
    protected final static int OMIT_NORMS          = 0x00000010;
    protected final static int OMIT_TF_POSITIONS   = 0x00000020;
    protected final static int STORE_TERMVECTORS   = 0x00000040;
    protected final static int STORE_TERMPOSITIONS = 0x00000080;
    protected final static int STORE_TERMOFFSETS   = 0x00000100;
  
  
    protected final static int MULTIVALUED         = 0x00000200;
    protected final static int SORT_MISSING_FIRST  = 0x00000400;
    protected final static int SORT_MISSING_LAST   = 0x00000800;
    
    protected final static int REQUIRED            = 0x00001000;
    protected final static int OMIT_POSITIONS      = 0x00002000;
    
    static final String[] propertyNames = {
            "indexed", "tokenized", "stored",
            "binary", "omitNorms", "omitTermFreqAndPositions",
            "termVectors", "termPositions", "termOffsets",
            "multiValued",
            "sortMissingFirst","sortMissingLast","required", "omitPositions"
    };
  
    static final Map<String,Integer> propertyMap = new HashMap<String,Integer>();
    static {
      for (String prop : propertyNames) {
        propertyMap.put(prop, propertyNameToInt(prop));
      }
    }
  
  
    /** Returns the symbolic name for the property. */
    static String getPropertyName(int property) {
      return propertyNames[ Integer.numberOfTrailingZeros(property) ];
    }
  
    static int propertyNameToInt(String name) {
      for (int i=0; i<propertyNames.length; i++) {
        if (propertyNames[i].equals(name)) {
          return 1 << i;
        }
      }
      return 0;
    }
  
  
    static String propertiesToString(int properties) {
      StringBuilder sb = new StringBuilder();
      boolean first=true;
      while (properties != 0) {
        if (!first) sb.append(',');
        first=false;
        int bitpos = Integer.numberOfTrailingZeros(properties);
        sb.append(getPropertyName(1 << bitpos));
        properties &= ~(1<<bitpos);  // clear that bit position
      }
      return sb.toString();
    }
  
    static boolean on(int bitfield, int props) {
      return (bitfield & props) != 0;
    }
  
    static boolean off(int bitfield, int props) {
      return (bitfield & props) == 0;
    }
  
    static int parseProperties(Map<String,String> properties, boolean which) {
      int props = 0;
      for (Map.Entry<String, String> entry : properties.entrySet()) {
        String val = entry.getValue();
        if(val == null) continue;
        if (Boolean.parseBoolean(val) == which) {
          props |= propertyNameToInt(entry.getKey());
        }
      }
      return props;
    }
  
  }
  