Revision 2073
Added by Matt Jones about 20 years ago
| QuerySpecification.java | ||
|---|---|---|
| 813 | 813 |
* xml_nodes to find the fields to be included by their path expression, and |
| 814 | 814 |
* avoids the use of the xml_index table. |
| 815 | 815 |
* |
| 816 |
* @param doclist |
|
| 817 |
* the list of document ids to search by |
|
| 818 |
* @param unaccessableNodePair |
|
| 819 |
* the node pair(start id and end id) which this user could not |
|
| 820 |
* access it |
|
| 821 |
* @param useXMLIndex a boolean flag indicating whether to search using xml_index |
|
| 816 |
* @param doclist the list of document ids to search |
|
| 817 |
* @param unaccessableNodePair the node pairs (start id and end id) which |
|
| 818 |
* this user should not access |
|
| 819 |
* @param useXMLIndex a boolean flag indicating whether to search using |
|
| 820 |
* xml_index |
|
| 822 | 821 |
*/ |
| 823 | 822 |
public String printExtendedSQL(String doclist, |
| 824 | 823 |
Hashtable unaccessableNodePair, boolean useXMLIndex) |
| ... | ... | |
| 840 | 839 |
} |
| 841 | 840 |
String path = (String) returnFieldList.elementAt(i); |
| 842 | 841 |
self.append("select xml_nodes.docid, ");
|
| 843 |
self.append("'"+ path + "' as path, ");
|
|
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self.append("xml_nodes.nodedata, ");
|
|
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self.append("'"+ path + "' as path, xml_nodes.nodedata, ");
|
|
| 845 | 843 |
self.append("xml_nodes.parentnodeid ");
|
| 846 | 844 |
self.append("from xml_nodes, xml_documents ");
|
| 847 | 845 |
self.append("where parentnodeid IN ");
|
| ... | ... | |
| 849 | 847 |
|
| 850 | 848 |
self.append(" AND xml_nodes.docid in (");
|
| 851 | 849 |
self.append(doclist); |
| 852 |
self.append(")");
|
|
| 853 |
self.append(" AND xml_nodes.nodetype = 'TEXT'");
|
|
| 850 |
self.append(") AND xml_nodes.nodetype = 'TEXT'");
|
|
| 854 | 851 |
self.append(" AND xml_nodes.rootnodeid = xml_documents.rootnodeid");
|
| 855 | 852 |
|
| 856 |
// add control part for extended query |
|
| 857 |
Enumeration en = unaccessableNodePair.keys(); |
|
| 858 |
|
|
| 859 |
while (en.hasMoreElements()) {
|
|
| 860 |
// Get control pairs in object |
|
| 861 |
Long startNodeIdObject = (Long) en.nextElement(); |
|
| 862 |
Long endNodeIdObject = (Long) unaccessableNodePair |
|
| 863 |
.get(startNodeIdObject); |
|
| 864 |
// change it to long |
|
| 865 |
long startNodeId = startNodeIdObject.longValue(); |
|
| 866 |
long endNodeId = endNodeIdObject.longValue(); |
|
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// add into query |
|
| 868 |
self.append(" AND( xml_nodes.nodeid < ");
|
|
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self.append(startNodeId); |
|
| 870 |
self.append(" OR xml_nodes.nodeid > ");
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|
| 871 |
self.append(endNodeId); |
|
| 872 |
self.append(")");
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|
| 873 |
} |
|
| 853 |
addAccessRestrictionSQL(unaccessableNodePair, self); |
|
| 874 | 854 |
self.append(")");
|
| 875 | 855 |
} |
| 876 | 856 |
|
| ... | ... | |
| 884 | 864 |
* It uses the xml_index table and so assumes that this table has been |
| 885 | 865 |
* built. |
| 886 | 866 |
* |
| 887 |
* @param doclist |
|
| 888 |
* the list of document ids to search by |
|
| 889 |
* @param unaccessableNodePair |
|
| 890 |
* the node pair(start id and end id) which this user could not |
|
| 891 |
* access it |
|
| 867 |
* @param doclist the list of document ids to search |
|
| 868 |
* @param unaccessableNodePair the node pairs (start id and end id) |
|
| 869 |
* which this user should not access |
|
| 892 | 870 |
*/ |
| 893 | 871 |
public String printExtendedSQL(String doclist, |
| 894 | 872 |
Hashtable unaccessableNodePair) |
| ... | ... | |
| 913 | 891 |
} |
| 914 | 892 |
} |
| 915 | 893 |
self.append(") AND xml_nodes.docid in (");
|
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//self.append(query.printSQL()); |
|
| 917 | 894 |
self.append(doclist); |
| 918 |
self.append(")");
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|
| 919 |
self.append(" AND xml_nodes.nodetype = 'TEXT'");
|
|
| 895 |
self.append(") AND xml_nodes.nodetype = 'TEXT'");
|
|
| 920 | 896 |
|
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addAccessRestrictionSQL(unaccessableNodePair, self); |
|
| 898 |
|
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| 899 |
return self.toString(); |
|
| 900 |
} |
|
| 901 |
|
|
| 902 |
/** |
|
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* Create the SQl necessary to restrict access to allowed nodes. This is |
|
| 904 |
* accomplished by restricting the nodes that are returned to include |
|
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* only those whose IDs fall outside of a set of start/stop pairs of |
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| 906 |
* nodeid values. These pairs are passed in as a hash, with the key |
|
| 907 |
* containing the start nodeid and the value containing the end nodeid. |
|
| 908 |
* Any nodes between these start and end nodeid values will be excluded |
|
| 909 |
* from the results. |
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| 910 |
* |
|
| 911 |
* @param unaccessableNodePair hash of start/end nodeid pairs to restrict |
|
| 912 |
* @param self a stringbuffer to which the genrated SQL is appended |
|
| 913 |
*/ |
|
| 914 |
private void addAccessRestrictionSQL(Hashtable unaccessableNodePair, |
|
| 915 |
StringBuffer self) |
|
| 916 |
{
|
|
| 921 | 917 |
// add control part for extended query |
| 922 | 918 |
Enumeration en = unaccessableNodePair.keys(); |
| 923 | 919 |
|
| ... | ... | |
| 930 | 926 |
long startNodeId = startNodeIdObject.longValue(); |
| 931 | 927 |
long endNodeId = endNodeIdObject.longValue(); |
| 932 | 928 |
// add into query |
| 933 |
self.append(" AND( xml_nodes.nodeid < ");
|
|
| 929 |
self.append(" AND ( xml_nodes.nodeid < ");
|
|
| 934 | 930 |
self.append(startNodeId); |
| 935 | 931 |
self.append(" OR xml_nodes.nodeid > ");
|
| 936 | 932 |
self.append(endNodeId); |
| 937 | 933 |
self.append(")");
|
| 938 | 934 |
} |
| 939 |
|
|
| 940 |
return self.toString(); |
|
| 941 | 935 |
} |
| 942 |
|
|
| 936 |
|
|
| 943 | 937 |
/** |
| 944 | 938 |
* This method prints sql based upon the returnfield tag in the pathquery |
| 945 | 939 |
* document has an attribute. This allows for customization of the returned |
| 946 |
* fields |
|
| 940 |
* fields.
|
|
| 947 | 941 |
* |
| 948 | 942 |
* @param doclist |
| 949 | 943 |
* the list of document ids to search by |
| ... | ... | |
| 1019 | 1013 |
//"querytitle=" + querytitle + "\n" + query; |
| 1020 | 1014 |
} |
| 1021 | 1015 |
|
| 1022 |
/* A method to get rid of attribute part in path expression */ |
|
| 1016 |
/** A method to get rid of attribute part in path expression */
|
|
| 1023 | 1017 |
public static String newPathExpressionWithOutAttribute(String pathExpression) |
| 1024 | 1018 |
{
|
| 1025 | 1019 |
if (pathExpression == null) { return null; }
|
| ... | ... | |
| 1033 | 1027 |
return newExpression; |
| 1034 | 1028 |
} |
| 1035 | 1029 |
|
| 1036 |
/* A method to get attribute name from path */ |
|
| 1030 |
/** A method to get attribute name from path */
|
|
| 1037 | 1031 |
public static String getAttributeName(String path) |
| 1038 | 1032 |
{
|
| 1039 | 1033 |
if (path == null) { return null; }
|
Also available in: Unified diff
Some refactoring of the printExtendedSQL()
methods to eliminate redundancy in the code and
to provide more readable documentation.