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diff --git a/org.argeo.app.geo/src/org/argeo/app/geo/CqlUtils.java b/org.argeo.app.geo/src/org/argeo/app/geo/CqlUtils.java
new file mode 100644
index 0000000..8d6c138
--- /dev/null
+++ b/org.argeo.app.geo/src/org/argeo/app/geo/CqlUtils.java
@@ -0,0 +1,60 @@
+package org.argeo.app.geo;
+
+import org.argeo.api.acr.NamespaceUtils;
+import org.argeo.api.acr.search.AndFilter;
+import org.argeo.api.acr.search.BasicSearch;
+import org.argeo.api.acr.search.ContentFilter;
+import org.geotools.filter.text.cql2.CQL;
+import org.geotools.filter.text.cql2.CQLException;
+import org.opengis.filter.And;
+import org.opengis.filter.Filter;
+import org.opengis.filter.PropertyIsEqualTo;
+import org.opengis.filter.expression.Literal;
+import org.opengis.filter.expression.PropertyName;
+
+public class CqlUtils {
+
+	public final static String CQL_FILTER = "cql_filter";
+
+	public static void filter(BasicSearch search, String cql) {
+		try {
+			filter(search, CQL.toFilter(cql));
+		} catch (CQLException e) {
+			throw new IllegalArgumentException("Cannot parse CQL: " + cql, e);
+		}
+	}
+
+	public static void filter(BasicSearch search, Filter filter) {
+		search.where((where) -> {
+			if (filter instanceof And and) {
+				processAnd(where, and);
+			} else if (filter instanceof PropertyIsEqualTo propertyIsEqualTo) {
+				processIsEqualTo(where, propertyIsEqualTo);
+			} else {
+				throw new IllegalArgumentException("Unsupported filter " + filter.getClass());
+			}
+		});
+	}
+
+	private static void processAnd(AndFilter contentFilter, And filter) {
+		for (Filter child : filter.getChildren()) {
+			if (child instanceof PropertyIsEqualTo propertyIsEqualTo) {
+				processIsEqualTo(contentFilter, propertyIsEqualTo);
+			}
+		}
+
+	}
+
+	private static void processIsEqualTo(ContentFilter<?> contentFilter, PropertyIsEqualTo propertyIsEqualTo) {
+		// TODO properly deal with types etc.
+		// see GeoTools org.geotools.filter.text.commons.ExpressionToText
+		PropertyName propertyName = (PropertyName) propertyIsEqualTo.getExpression1();
+		Literal value = (Literal) propertyIsEqualTo.getExpression2();
+		// String escaped = literal.toString().replaceAll("'", "''");
+		contentFilter.eq(NamespaceUtils.parsePrefixedName(propertyName.toString()), value.toString());
+	}
+
+	/** singleton */
+	private CqlUtils() {
+	}
+}