--- /dev/null
+package org.apache.lucene.util;
+
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import org.apache.lucene.analysis.Token;
+import org.apache.lucene.analysis.tokenattributes.*;
+
+import java.util.Iterator;
+import java.util.HashMap;
+import java.util.Map;
+
+public class TestAttributeSource extends LuceneTestCase {
+
+ public void testCaptureState() {
+ // init a first instance
+ AttributeSource src = new AttributeSource();
+ CharTermAttribute termAtt = src.addAttribute(CharTermAttribute.class);
+ TypeAttribute typeAtt = src.addAttribute(TypeAttribute.class);
+ termAtt.append("TestTerm");
+ typeAtt.setType("TestType");
+ final int hashCode = src.hashCode();
+
+ AttributeSource.State state = src.captureState();
+
+ // modify the attributes
+ termAtt.setEmpty().append("AnotherTestTerm");
+ typeAtt.setType("AnotherTestType");
+ assertTrue("Hash code should be different", hashCode != src.hashCode());
+
+ src.restoreState(state);
+ assertEquals("TestTerm", termAtt.toString());
+ assertEquals("TestType", typeAtt.type());
+ assertEquals("Hash code should be equal after restore", hashCode, src.hashCode());
+
+ // restore into an exact configured copy
+ AttributeSource copy = new AttributeSource();
+ copy.addAttribute(CharTermAttribute.class);
+ copy.addAttribute(TypeAttribute.class);
+ copy.restoreState(state);
+ assertEquals("Both AttributeSources should have same hashCode after restore", src.hashCode(), copy.hashCode());
+ assertEquals("Both AttributeSources should be equal after restore", src, copy);
+
+ // init a second instance (with attributes in different order and one additional attribute)
+ AttributeSource src2 = new AttributeSource();
+ typeAtt = src2.addAttribute(TypeAttribute.class);
+ FlagsAttribute flagsAtt = src2.addAttribute(FlagsAttribute.class);
+ termAtt = src2.addAttribute(CharTermAttribute.class);
+ flagsAtt.setFlags(12345);
+
+ src2.restoreState(state);
+ assertEquals("TestTerm", termAtt.toString());
+ assertEquals("TestType", typeAtt.type());
+ assertEquals("FlagsAttribute should not be touched", 12345, flagsAtt.getFlags());
+
+ // init a third instance missing one Attribute
+ AttributeSource src3 = new AttributeSource();
+ termAtt = src3.addAttribute(CharTermAttribute.class);
+ try {
+ src3.restoreState(state);
+ fail("The third instance is missing the TypeAttribute, so restoreState() should throw IllegalArgumentException");
+ } catch (IllegalArgumentException iae) {
+ // pass
+ }
+ }
+
+ public void testCloneAttributes() {
+ final AttributeSource src = new AttributeSource();
+ final FlagsAttribute flagsAtt = src.addAttribute(FlagsAttribute.class);
+ final TypeAttribute typeAtt = src.addAttribute(TypeAttribute.class);
+ flagsAtt.setFlags(1234);
+ typeAtt.setType("TestType");
+
+ final AttributeSource clone = src.cloneAttributes();
+ final Iterator<Class<? extends Attribute>> it = clone.getAttributeClassesIterator();
+ assertEquals("FlagsAttribute must be the first attribute", FlagsAttribute.class, it.next());
+ assertEquals("TypeAttribute must be the second attribute", TypeAttribute.class, it.next());
+ assertFalse("No more attributes", it.hasNext());
+
+ final FlagsAttribute flagsAtt2 = clone.getAttribute(FlagsAttribute.class);
+ final TypeAttribute typeAtt2 = clone.getAttribute(TypeAttribute.class);
+ assertNotSame("FlagsAttribute of original and clone must be different instances", flagsAtt2, flagsAtt);
+ assertNotSame("TypeAttribute of original and clone must be different instances", typeAtt2, typeAtt);
+ assertEquals("FlagsAttribute of original and clone must be equal", flagsAtt2, flagsAtt);
+ assertEquals("TypeAttribute of original and clone must be equal", typeAtt2, typeAtt);
+
+ // test copy back
+ flagsAtt2.setFlags(4711);
+ typeAtt2.setType("OtherType");
+ clone.copyTo(src);
+ assertEquals("FlagsAttribute of original must now contain updated term", 4711, flagsAtt.getFlags());
+ assertEquals("TypeAttribute of original must now contain updated type", "OtherType", typeAtt.type());
+ // verify again:
+ assertNotSame("FlagsAttribute of original and clone must be different instances", flagsAtt2, flagsAtt);
+ assertNotSame("TypeAttribute of original and clone must be different instances", typeAtt2, typeAtt);
+ assertEquals("FlagsAttribute of original and clone must be equal", flagsAtt2, flagsAtt);
+ assertEquals("TypeAttribute of original and clone must be equal", typeAtt2, typeAtt);
+ }
+
+ public void testToStringAndMultiAttributeImplementations() {
+ AttributeSource src = new AttributeSource();
+ CharTermAttribute termAtt = src.addAttribute(CharTermAttribute.class);
+ TypeAttribute typeAtt = src.addAttribute(TypeAttribute.class);
+ termAtt.append("TestTerm");
+ typeAtt.setType("TestType");
+ assertEquals("Attributes should appear in original order", "("+termAtt.toString()+","+typeAtt.toString()+")", src.toString());
+ Iterator<AttributeImpl> it = src.getAttributeImplsIterator();
+ assertTrue("Iterator should have 2 attributes left", it.hasNext());
+ assertSame("First AttributeImpl from iterator should be termAtt", termAtt, it.next());
+ assertTrue("Iterator should have 1 attributes left", it.hasNext());
+ assertSame("Second AttributeImpl from iterator should be typeAtt", typeAtt, it.next());
+ assertFalse("Iterator should have 0 attributes left", it.hasNext());
+
+ src = new AttributeSource();
+ src.addAttributeImpl(new Token());
+ // this should not add a new attribute as Token implements CharTermAttribute, too
+ termAtt = src.addAttribute(CharTermAttribute.class);
+ assertTrue("CharTermAttribute should be implemented by Token", termAtt instanceof Token);
+ // get the Token attribute and check, that it is the only one
+ it = src.getAttributeImplsIterator();
+ Token tok = (Token) it.next();
+ assertFalse("There should be only one attribute implementation instance", it.hasNext());
+
+ termAtt.setEmpty().append("TestTerm");
+ assertEquals("Token should only printed once", "("+tok.toString()+")", src.toString());
+ }
+
+ public void testDefaultAttributeFactory() throws Exception {
+ AttributeSource src = new AttributeSource();
+
+ assertTrue("CharTermAttribute is not implemented by CharTermAttributeImpl",
+ src.addAttribute(CharTermAttribute.class) instanceof CharTermAttributeImpl);
+ assertTrue("OffsetAttribute is not implemented by OffsetAttributeImpl",
+ src.addAttribute(OffsetAttribute.class) instanceof OffsetAttributeImpl);
+ assertTrue("FlagsAttribute is not implemented by FlagsAttributeImpl",
+ src.addAttribute(FlagsAttribute.class) instanceof FlagsAttributeImpl);
+ assertTrue("PayloadAttribute is not implemented by PayloadAttributeImpl",
+ src.addAttribute(PayloadAttribute.class) instanceof PayloadAttributeImpl);
+ assertTrue("PositionIncrementAttribute is not implemented by PositionIncrementAttributeImpl",
+ src.addAttribute(PositionIncrementAttribute.class) instanceof PositionIncrementAttributeImpl);
+ assertTrue("TypeAttribute is not implemented by TypeAttributeImpl",
+ src.addAttribute(TypeAttribute.class) instanceof TypeAttributeImpl);
+ }
+
+ @SuppressWarnings("unchecked")
+ public void testInvalidArguments() throws Exception {
+ try {
+ AttributeSource src = new AttributeSource();
+ src.addAttribute(Token.class);
+ fail("Should throw IllegalArgumentException");
+ } catch (IllegalArgumentException iae) {}
+
+ try {
+ AttributeSource src = new AttributeSource(Token.TOKEN_ATTRIBUTE_FACTORY);
+ src.addAttribute(Token.class);
+ fail("Should throw IllegalArgumentException");
+ } catch (IllegalArgumentException iae) {}
+
+ try {
+ AttributeSource src = new AttributeSource();
+ // break this by unsafe cast
+ src.addAttribute((Class) Iterator.class);
+ fail("Should throw IllegalArgumentException");
+ } catch (IllegalArgumentException iae) {}
+ }
+
+ public void testLUCENE_3042() throws Exception {
+ final AttributeSource src1 = new AttributeSource();
+ src1.addAttribute(CharTermAttribute.class).append("foo");
+ int hash1 = src1.hashCode(); // this triggers a cached state
+ final AttributeSource src2 = new AttributeSource(src1);
+ src2.addAttribute(TypeAttribute.class).setType("bar");
+ assertTrue("The hashCode is identical, so the captured state was preserved.", hash1 != src1.hashCode());
+ assertEquals(src2.hashCode(), src1.hashCode());
+ }
+
+ // this class is included in external class check, so no assertion errors occur
+ @Deprecated
+ static class TestAttributeImpl extends AttributeImpl implements FlagsAttribute {
+
+ private int flags = 0;
+
+ public int getFlags() { return flags; }
+ public void setFlags(int flags) { this.flags = flags; }
+
+ @Override
+ public void clear() { flags = 0; }
+
+ @Override
+ public void copyTo(AttributeImpl target) {
+ FlagsAttribute t = (FlagsAttribute) target;
+ t.setFlags(flags);
+ }
+
+ @Override
+ public String toString() {
+ return "foo=bar,moo=mae";
+ }
+
+ }
+
+ // this class is excluded in external class check, so assertion on calling reflectWith should occur
+ @Deprecated
+ static class TestAttributeImpl2 extends TestAttributeImpl {}
+
+ @Deprecated
+ public void testReflectionOfToString() throws Exception {
+ final AttributeSource src = new AttributeSource();
+ final AttributeImpl att = new TestAttributeImpl();
+ src.addAttributeImpl(att);
+
+ assertSame("FlagsAttribute is not implemented by same instance of TestAttributeImpl",
+ att, src.addAttribute(FlagsAttribute.class));
+
+ final Map<String,Object> map = new HashMap<String,Object>();
+ final AttributeReflector reflector = new AttributeReflector() {
+ public void reflect(Class<? extends Attribute> attClass, String key, Object value) {
+ assertSame(FlagsAttribute.class, attClass);
+ map.put(key, value);
+ }
+ };
+ att.reflectWith(reflector);
+ assertEquals(2, map.size());
+ assertEquals("bar", map.get("foo"));
+ assertEquals("mae", map.get("moo"));
+
+ map.clear();
+ src.reflectWith(reflector);
+ assertEquals(2, map.size());
+ assertEquals("bar", map.get("foo"));
+ assertEquals("mae", map.get("moo"));
+
+ map.clear();
+ try {
+ new TestAttributeImpl2().reflectWith(reflector);
+ fail("TestAttributeImpl2 should fail assertion on toString() parsing");
+ } catch (AssertionError e) {
+ // pass
+ }
+ }
+
+}
fnp / pylucene.git / blobdiff