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annotate lucene/src/luan/modules/lucene/FieldTable.java @ 416:91af5337b9ae

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add LuanMeta.__tostring()
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 30 Apr 2015 06:28:25 -0600
parents ce8e19567911
children df95199ca4c0
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1 package luan.modules.lucene;
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3 import java.util.Map;
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4 import java.util.HashMap;
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5 import java.util.concurrent.ConcurrentHashMap;
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6 import java.util.Iterator;
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7 import luan.LuanState;
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8 import luan.LuanTable;
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9 import luan.LuanMeta;
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12 class FieldTable extends LuanMeta {
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13 final Map<String,String> map = new ConcurrentHashMap<String,String>();
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14 final Map<String,String> reverseMap = new ConcurrentHashMap<String,String>();
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16 FieldTable() {
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17 put("type","type index");
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18 put("id","id index");
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19 }
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20
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21 @Override public boolean canNewindex() {
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22 return true;
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23 }
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25 @Override public void __newindex(LuanState luan,LuanTable tbl,Object key,Object value) {
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26 put(key,value);
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27 }
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29 private void put(Object key,Object value) {
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30 if( !(key instanceof String) )
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31 throw new UnsupportedOperationException("key must be string");
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32 String name = (String)key;
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33 if( value==null ) { // delete
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34 reverseMap.remove(map.remove(name));
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35 return;
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36 }
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37 if( !(value instanceof String) )
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38 throw new UnsupportedOperationException("value must be string");
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39 String field = (String)value;
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40 String oldField = map.put(name,field);
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41 if( oldField != null )
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42 reverseMap.remove(oldField);
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43 String oldName = reverseMap.put(field,name);
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44 if( oldName != null ) {
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45 reverseMap.put(field,oldName);
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46 map.remove(name);
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47 throw new IllegalArgumentException("field '"+oldName+"' is already assigned to '"+field+"'");
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48 }
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49 }
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51 @Override public Object __index(LuanState luan,LuanTable tbl,Object key) {
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52 // @Override public final Object get(Object key) {
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53 return map.get(key);
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54 }
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55
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56 @Override public final Iterator keys(LuanTable tbl) {
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57 return map.keySet().iterator();
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58 }
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60 @Override protected String type(LuanTable tbl) {
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61 return "lucene-field";
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62 }
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64 }