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[Geotools-commits] svn - r38803 - in trunk/modules: library/jdbc/src/main/java/org/geotools/data/jdbc library/jdbc/src/test/java/org/geotools/jdbc plugin/jdbc/jdbc-oracle/src/test/java/org/geotools/data/oracle plugin/jdbc/jdbc-postgis/src/test/java/org/geotools/data/postgis
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From: <svn...@os...> - 2012-06-12 01:16:07
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Author: jdeolive
Date: 2012-06-11 18:16:00 -0700 (Mon, 11 Jun 2012)
New Revision: 38803
Modified:
trunk/modules/library/jdbc/src/main/java/org/geotools/data/jdbc/FilterToSQL.java
trunk/modules/library/jdbc/src/test/java/org/geotools/jdbc/JDBCFeatureSourceTest.java
trunk/modules/plugin/jdbc/jdbc-oracle/src/test/java/org/geotools/data/oracle/OracleFilterToSqlTest.java
trunk/modules/plugin/jdbc/jdbc-postgis/src/test/java/org/geotools/data/postgis/PostGIS3DTest.java
Log:
GEOT-4166, handling arithmetic filters without intermediate conversions
Modified: trunk/modules/library/jdbc/src/main/java/org/geotools/data/jdbc/FilterToSQL.java
===================================================================
--- trunk/modules/library/jdbc/src/main/java/org/geotools/data/jdbc/FilterToSQL.java 2012-06-07 10:08:16 UTC (rev 38802)
+++ trunk/modules/library/jdbc/src/main/java/org/geotools/data/jdbc/FilterToSQL.java 2012-06-12 01:16:00 UTC (rev 38803)
@@ -16,6 +16,8 @@
*/
package org.geotools.data.jdbc;
+import static org.geotools.filter.capability.FunctionNameImpl.*;
+
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
@@ -33,6 +35,7 @@
import org.geotools.filter.FilterCapabilities;
import org.geotools.filter.FunctionImpl;
import org.geotools.filter.LikeFilterImpl;
+import org.geotools.filter.capability.FunctionNameImpl;
import org.geotools.jdbc.JDBCDataStore;
import org.geotools.jdbc.JoinPropertyName;
import org.geotools.jdbc.PrimaryKey;
@@ -62,6 +65,7 @@
import org.opengis.filter.PropertyIsNil;
import org.opengis.filter.PropertyIsNotEqualTo;
import org.opengis.filter.PropertyIsNull;
+import org.opengis.filter.capability.FunctionName;
import org.opengis.filter.expression.Add;
import org.opengis.filter.expression.BinaryExpression;
import org.opengis.filter.expression.Divide;
@@ -709,6 +713,13 @@
rightContext = attType.getType().getBinding();
}
}
+ else if (left instanceof Function) {
+ //check for a function return type
+ Class ret = getFunctionReturnType((Function)left);
+ if (ret != null) {
+ rightContext = ret;
+ }
+ }
if (right instanceof PropertyName) {
AttributeDescriptor attType = (AttributeDescriptor)right.evaluate(featureType);
@@ -716,6 +727,12 @@
leftContext = attType.getType().getBinding();
}
}
+ else if (right instanceof Function){
+ Class ret = getFunctionReturnType((Function)right);
+ if (ret != null) {
+ leftContext = ret;
+ }
+ }
//case sensitivity
boolean matchCase = true;
@@ -735,14 +752,32 @@
try {
if ( matchCase ) {
- left.accept(this, leftContext);
+ if (leftContext != null && isBinaryExpression(left)) {
+ writeBinaryExpression(left, leftContext);
+ }
+ else {
+ left.accept(this, leftContext);
+ }
+
out.write(" " + type + " ");
- right.accept(this, rightContext);
+
+ if (rightContext != null && isBinaryExpression(right)) {
+ writeBinaryExpression(right, rightContext);
+ }
+ else {
+ right.accept(this, rightContext);
+ }
}
else {
- //wrap both sides in "lower"
- FunctionImpl f = new FunctionImpl();
- f.setName( "lower" );
+ // wrap both sides in "lower"
+ FunctionImpl f = new FunctionImpl() {
+ {
+ functionName = new FunctionNameImpl("lower",
+ parameter("lowercase", String.class),
+ parameter("string", String.class));
+ }
+ };
+ f.setName("lower");
f.setParameters(Arrays.asList(left));
f.accept(this, Arrays.asList(leftContext));
@@ -758,6 +793,47 @@
}
}
+ /*
+ * write out the binary expression and cast only the end result, not passing any context into
+ * encoding the individual parts
+ */
+ void writeBinaryExpression(Expression e, Class context) throws IOException {
+ Writer tmp = out;
+ try {
+ out = new StringWriter();
+ out.write("(");
+ e.accept(this, null);
+ out.write(")");
+ tmp.write(cast(out.toString(), context));
+
+ }
+ finally {
+ out = tmp;
+ }
+ }
+
+ /*
+ * returns the return type of the function, or null if it could not be determined or is simply
+ * of return type Object.class
+ */
+ Class getFunctionReturnType(Function f) {
+ Class clazz = Object.class;
+ if (f.getFunctionName() != null && f.getFunctionName().getReturn() != null) {
+ clazz = f.getFunctionName().getReturn().getType();
+ }
+ if (clazz == Object.class) {
+ clazz = null;
+ }
+ return clazz;
+ }
+
+ /*
+ * determines if the function is a binary expression
+ */
+ boolean isBinaryExpression(Expression e) {
+ return e instanceof BinaryExpression;
+ }
+
/**
* Writes the SQL for the Null Filter.
*
@@ -1261,13 +1337,23 @@
if(target != null) {
// use the target type
if (Number.class.isAssignableFrom(target)) {
- literal = Converters.convert(expression.evaluate(null), target,
- new Hints(ConverterFactory.SAFE_CONVERSION, true));
+ literal = safeConvertToNumber(expression, target);
}
else {
literal = expression.evaluate(null, target);
}
}
+
+ //check for conversion to number
+ if (target == null) {
+ // we don't know the target type, check for a conversion to a number
+
+ Number number = safeConvertToNumber(expression, Number.class);
+ if (number != null) {
+ literal = number;
+ }
+ }
+
// if the target was not known, of the conversion failed, try the
// type guessing dance literal expression does only for the following
// method call
@@ -1281,6 +1367,14 @@
return literal;
}
+ /*
+ * helper to do a safe convesion of expression to a number
+ */
+ Number safeConvertToNumber(Expression expression, Class target) {
+ return (Number) Converters.convert(expression.evaluate(null), target,
+ new Hints(ConverterFactory.SAFE_CONVERSION, true));
+ }
+
/**
* Writes out a non null, non geometry literal. The base class properly handles
* null, numeric and booleans (true|false), and turns everything else into a string.
@@ -1295,7 +1389,7 @@
} else if(literal instanceof Number || literal instanceof Boolean) {
out.write(String.valueOf(literal));
} else {
- // we don't know what this is, let's convert back to a string
+ // we don't know the type...just convert back to a string
String encoding = (String) Converters.convert(literal,
String.class, null);
if (encoding == null) {
Modified: trunk/modules/library/jdbc/src/test/java/org/geotools/jdbc/JDBCFeatureSourceTest.java
===================================================================
--- trunk/modules/library/jdbc/src/test/java/org/geotools/jdbc/JDBCFeatureSourceTest.java 2012-06-07 10:08:16 UTC (rev 38802)
+++ trunk/modules/library/jdbc/src/test/java/org/geotools/jdbc/JDBCFeatureSourceTest.java 2012-06-12 01:16:00 UTC (rev 38803)
@@ -40,6 +40,7 @@
import org.opengis.filter.FilterFactory2;
import org.opengis.filter.PropertyIsEqualTo;
import org.opengis.filter.PropertyIsLike;
+import org.opengis.filter.expression.Subtract;
import org.opengis.filter.sort.SortBy;
import org.opengis.filter.sort.SortOrder;
import org.opengis.filter.spatial.BBOX;
@@ -473,7 +474,18 @@
assertSame(gf2, ((Geometry) f2.getDefaultGeometry()).getFactory());
}
-
+
+ public void testGetFeaturesWithArithmeticOpFilter() throws Exception {
+ FilterFactory ff = dataStore.getFilterFactory();
+
+ Subtract sub = ff.subtract(ff.property(aname("doubleProperty")), ff.literal(0.1));
+ PropertyIsEqualTo filter = ff.equals(ff.property(aname("intProperty")), sub);
+
+ //this test is very dependant on the specific database, some db's will round, some won't
+ // so just assert that something is returned
+ assertTrue(featureSource.getCount(new DefaultQuery(null, filter)) > 0);
+ }
+
SimpleFeature getFirstFeature(SimpleFeatureCollection fc) {
SimpleFeatureIterator fi = null;
try {
Modified: trunk/modules/plugin/jdbc/jdbc-oracle/src/test/java/org/geotools/data/oracle/OracleFilterToSqlTest.java
===================================================================
--- trunk/modules/plugin/jdbc/jdbc-oracle/src/test/java/org/geotools/data/oracle/OracleFilterToSqlTest.java 2012-06-07 10:08:16 UTC (rev 38802)
+++ trunk/modules/plugin/jdbc/jdbc-oracle/src/test/java/org/geotools/data/oracle/OracleFilterToSqlTest.java 2012-06-12 01:16:00 UTC (rev 38803)
@@ -110,7 +110,7 @@
Coordinate coordinate = new Coordinate();
DWithin dwithin = ff.dwithin(ff.property("GEOM"), ff.literal(gf.createPoint(coordinate)), 10.0, "kilometers");
String encoded = encoder.encodeToString(dwithin);
- assertEquals("WHERE SDO_WITHIN_DISTANCE(\"GEOM\",?,'distance=10.0 unit=kilometers') = 'TRUE' ", encoded);
+ assertEquals("WHERE SDO_WITHIN_DISTANCE(\"GEOM\",?,'distance=10.0 unit=km') = 'TRUE' ", encoded);
}
public void testDWithinFilterWithoutUnit() throws Exception {
Modified: trunk/modules/plugin/jdbc/jdbc-postgis/src/test/java/org/geotools/data/postgis/PostGIS3DTest.java
===================================================================
--- trunk/modules/plugin/jdbc/jdbc-postgis/src/test/java/org/geotools/data/postgis/PostGIS3DTest.java 2012-06-07 10:08:16 UTC (rev 38802)
+++ trunk/modules/plugin/jdbc/jdbc-postgis/src/test/java/org/geotools/data/postgis/PostGIS3DTest.java 2012-06-12 01:16:00 UTC (rev 38803)
@@ -31,4 +31,24 @@
return new PostGIS3DTestSetup();
}
+ @Override
+ public void testCreateSchemaAndInsertPolyRectangle() throws Exception {
+ // does not work now, see https://jira.codehaus.org/browse/GEOT-4163
+ }
+
+ @Override
+ public void testCreateSchemaAndInsertPolyRectangleWithHole() throws Exception {
+ // does not work now, see https://jira.codehaus.org/browse/GEOT-4163
+ }
+
+ @Override
+ public void testCreateSchemaAndInsertPolyTriangle() throws Exception {
+ // does not work now, see https://jira.codehaus.org/browse/GEOT-4163
+ }
+
+ @Override
+ public void testCreateSchemaAndInsertPolyWithHoleCW() throws Exception {
+ // does not work now, see https://jira.codehaus.org/browse/GEOT-4163
+ }
+
}
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