Revision 3226
Added by Jing Tao about 17 years ago
| QueryGroup.java | ||
|---|---|---|
| 47 | 47 |
private Vector queryTermsWithSameValue = null;//this two dimension vectors. |
| 48 | 48 |
//will hold query terms which has same search value. |
| 49 | 49 |
private Vector queryTerms = null;//this vector only holds query terms without same search value. |
| 50 |
private Vector queryGroupsChildren = null; |
|
| 50 | 51 |
private static Logger logMetacat = Logger.getLogger(QueryGroup.class); |
| 51 | 52 |
|
| 52 | 53 |
/** |
| ... | ... | |
| 60 | 61 |
children = new Vector(); |
| 61 | 62 |
queryTermsWithSameValue = new Vector(); |
| 62 | 63 |
queryTerms = new Vector(); |
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queryGroupsChildren = new Vector(); |
|
| 63 | 65 |
} |
| 64 | 66 |
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| 65 | 67 |
/** |
| ... | ... | |
| 68 | 70 |
* @param qgroup the query group to be added to the list of terms |
| 69 | 71 |
*/ |
| 70 | 72 |
public void addChild(QueryGroup qgroup) {
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children.add((Object)qgroup); |
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//children.add((Object)qgroup); |
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queryGroupsChildren.add(qgroup); |
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| 72 | 75 |
} |
| 73 | 76 |
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/** |
| ... | ... | |
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* @param qterm the query term to be added to the list of terms |
| 78 | 81 |
*/ |
| 79 | 82 |
public void addChild(QueryTerm qterm) {
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children.add((Object)qterm); |
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// children.add((Object)qterm);
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handleNewQueryTerms(qterm); |
| 82 | 85 |
|
| 83 | 86 |
} |
| ... | ... | |
| 157 | 160 |
+ self.toString()); |
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return self.toString(); |
| 159 | 162 |
} |
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/* |
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* If every query term in a queryGroup share a search value, we should |
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* use a new query to replace the original query term query in order to |
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* improve performance |
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*/ |
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private String printSQLStringWithSameSearchValue() |
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{
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String sql =""; |
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String value =""; |
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StringBuffer sqlBuff = new StringBuffer(); |
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Vector pathVector = new Vector(); |
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int index =0; |
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|
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if (queryTermsWithSameValue != null) |
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{
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QueryTerm term1 = (QueryTerm)queryTermsWithSameValue.elementAt(0); |
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value = term1.getValue(); |
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boolean first = true; |
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sqlBuff.append("SELECT DISTINCT docid FROM xml_path_index WHERE UPPER(nodedata) LIKE '%");
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sqlBuff.append(value); |
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sqlBuff.append("%' AND path IN (");
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//gets every path in query term object |
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for (int i=0; i<queryTermsWithSameValue.size(); i++) |
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{
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QueryTerm term = (QueryTerm)queryTermsWithSameValue.elementAt(i); |
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value = term.getValue(); |
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String path = term.getPathExpression(); |
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if (path != null && !path.equals(""))
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{
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if (first) |
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{
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first = false; |
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sqlBuff.append("'");
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sqlBuff.append(path); |
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sqlBuff.append("'");
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} |
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else |
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{
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sqlBuff.append(",'");
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sqlBuff.append(path); |
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sqlBuff.append("'");
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} |
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index++; |
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} |
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} |
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sqlBuff.append(")");
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} |
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if (index >0) |
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{
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sql = sqlBuff.toString(); |
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} |
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return sql; |
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} |
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/** |
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* create a String description of the query that this instance represents. |
Also available in: Unified diff
Add a new method to print out more effecient query.