72 lines
1.7 KiB
Java
72 lines
1.7 KiB
Java
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package com.metaweb.gridlock.browsing;
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import java.util.ArrayList;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Properties;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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import com.metaweb.gridlock.browsing.facets.Facet;
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import com.metaweb.gridlock.browsing.facets.ListFacet;
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public class Engine {
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protected List<Facet> facets = new LinkedList<Facet>();
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public FilteredRows getAllFilteredRows() {
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return getFilteredRows(null);
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}
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public FilteredRows getFilteredRows(Facet except) {
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ConjunctiveFilteredRows cfr = new ConjunctiveFilteredRows();
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for (Facet facet : facets) {
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if (facet != except) {
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cfr.add(facet.getRowFilter());
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}
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}
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return cfr;
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}
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public JSONObject getJSON(Properties options) throws JSONException {
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JSONObject o = new JSONObject();
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List<JSONObject> a = new ArrayList<JSONObject>(facets.size());
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for (Facet facet : facets) {
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a.add(facet.getJSON(options));
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}
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o.put("facets", a);
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return o;
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}
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public void initializeFromJSON(JSONObject o) throws JSONException {
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JSONArray a = o.getJSONArray("facets");
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int length = a.length();
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for (int i = 0; i < length; i++) {
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JSONObject fo = a.getJSONObject(i);
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String type = fo.getString("type");
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Facet facet = null;
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if ("list".equals(type)) {
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facet = new ListFacet();
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}
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if (facet != null) {
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facet.initializeFromJSON(fo);
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facets.add(facet);
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}
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}
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}
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public void computeFacets() throws JSONException {
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for (Facet facet : facets) {
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FilteredRows filteredRows = getFilteredRows(facet);
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facet.computeChoices(filteredRows);
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}
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}
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}
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