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Posted to commits@polygene.apache.org by ni...@apache.org on 2015/07/30 21:48:45 UTC
[46/80] [partial] zest-java git commit: First round of changes to
move to org.apache.zest namespace.
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/metrics/MetricsProvider.java
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diff --git a/core/api/src/main/java/org/apache/zest/api/metrics/MetricsProvider.java b/core/api/src/main/java/org/apache/zest/api/metrics/MetricsProvider.java
new file mode 100644
index 0000000..78ad9d8
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/metrics/MetricsProvider.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2012, Niclas Hedhman. All Rights Reserved.
+ *
+ * Licensed 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.
+ */
+
+package org.apache.zest.api.metrics;
+
+/**
+ * Metrics Provider SPI.
+ * <p>
+ * The Zest Runtime will automatically ook for a service that implements the MetricsProvider interdace
+ * and use it for internal Runtime metrics, such as the UnitOfWork measuring the time from creation to close.
+ * </p>
+ * <p>
+ * The Metrics Library is available to add metric functionality to applications in the same way, and
+ * will use the same MetricsProvider.
+ * </p>
+ * <p>
+ * Note that the usual visibitlity rules applies, so you might have more than one MetricsProvider server,
+ * perhaps per layer.
+ * </p>
+ */
+public interface MetricsProvider
+{
+ /**
+ * Creates a new factory instance.
+ *
+ * The instanctiation is done by providing a Metric type, which is one of
+ * <ul>
+ * <li>{@link MetricsCounter}</li>
+ * <li>{@link MetricsGauge}</li>
+ * <li>{@link MetricsHealthCheck}</li>
+ * <li>{@link MetricsHistogram}</li>
+ * <li>{@link MetricsMeter}</li>
+ * <li>{@link MetricsTimer}</li>
+ * </ul>
+ *
+ * @param factoryType The class of the metric type needed.
+ * @param <T> The metric type requested.
+ *
+ * @return A factory instance
+ *
+ * @throws MetricsNotSupportedException when the MetricsProvider is not supporting the factory type requested.
+ */
+ <T extends MetricsFactory> T createFactory( Class<T> factoryType )
+ throws MetricsNotSupportedException;
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/metrics/MetricsTimer.java
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diff --git a/core/api/src/main/java/org/apache/zest/api/metrics/MetricsTimer.java b/core/api/src/main/java/org/apache/zest/api/metrics/MetricsTimer.java
new file mode 100644
index 0000000..2065e6a
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/metrics/MetricsTimer.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2012, Niclas Hedhman. All Rights Reserved.
+ *
+ * Licensed 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.
+ */
+
+package org.apache.zest.api.metrics;
+
+/**
+ * Timer Metrics.
+ */
+public interface MetricsTimer extends Metric
+{
+ /**
+ * Start the Timer Metrics.
+ */
+ Context start();
+
+ /**
+ * Timer Metrics Context.
+ */
+ public interface Context
+ {
+ /**
+ * Stop the Timer Metrics.
+ */
+ void stop();
+ }
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/metrics/MetricsTimerFactory.java
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diff --git a/core/api/src/main/java/org/apache/zest/api/metrics/MetricsTimerFactory.java b/core/api/src/main/java/org/apache/zest/api/metrics/MetricsTimerFactory.java
new file mode 100644
index 0000000..74a7b7f
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/metrics/MetricsTimerFactory.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2012, Niclas Hedhman. All Rights Reserved.
+ *
+ * Licensed 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.
+ */
+
+package org.apache.zest.api.metrics;
+
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Create MetricsTimer instances.
+ */
+public interface MetricsTimerFactory extends MetricsFactory
+{
+ /**
+ * Create a MetricsTimer instance.
+ * If the same arguments are given twice, the same instance must be returned.
+ *
+ * @param origin The class that instantiate the metric
+ * @param name A human readable, short name of the metric.
+ * @param duration the scale unit for this timer's duration metrics
+ * @param rate the scale unit for this timer's rate metrics
+ *
+ * @return A Metric instance to be used, OR org.qi4j.spi.metrics.DefaultMetric.NULL if not supported.
+ *
+ */
+ MetricsTimer createTimer( Class<?> origin, String name, TimeUnit duration, TimeUnit rate );
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/metrics/package.html
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diff --git a/core/api/src/main/java/org/apache/zest/api/metrics/package.html b/core/api/src/main/java/org/apache/zest/api/metrics/package.html
new file mode 100644
index 0000000..d0280bd
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/metrics/package.html
@@ -0,0 +1,21 @@
+<!--
+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.
+-->
+<html>
+ <body>
+ <h2>Metrics API.</h2>
+ </body>
+</html>
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/mixin/Initializable.java
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diff --git a/core/api/src/main/java/org/apache/zest/api/mixin/Initializable.java b/core/api/src/main/java/org/apache/zest/api/mixin/Initializable.java
new file mode 100644
index 0000000..be551c2
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/mixin/Initializable.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2008, Rickard Öberg. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+
+package org.apache.zest.api.mixin;
+
+/**
+ * Fragments which want to be initialized can implement
+ * this callback interface. It will be invoked after
+ * the fragment has bee instantiated and all injections have been done.
+ */
+public interface Initializable
+{
+ /**
+ * Initialize the fragment
+ *
+ * @throws org.apache.zest.api.mixin.InitializationException
+ * if something went wrong
+ */
+ void initialize()
+ throws InitializationException;
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/mixin/InitializationException.java
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diff --git a/core/api/src/main/java/org/apache/zest/api/mixin/InitializationException.java b/core/api/src/main/java/org/apache/zest/api/mixin/InitializationException.java
new file mode 100644
index 0000000..c46c3af
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/mixin/InitializationException.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2007, Rickard Öberg. All Rights Reserved.
+ * Copyright (c) 2007, Niclas Hedhman. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+package org.apache.zest.api.mixin;
+
+/**
+ * Thrown when a Fragment or object could not be instantiated.
+ */
+public class InitializationException
+ extends RuntimeException
+{
+ private static final long serialVersionUID = 1L;
+
+ public InitializationException()
+ {
+ }
+
+ public InitializationException( String message )
+ {
+ super( message );
+ }
+
+ public InitializationException( String message, Throwable cause )
+ {
+ super( message, cause );
+ }
+
+ public InitializationException( Throwable cause )
+ {
+ super( cause );
+ }
+}
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/mixin/InvalidMixinException.java
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diff --git a/core/api/src/main/java/org/apache/zest/api/mixin/InvalidMixinException.java b/core/api/src/main/java/org/apache/zest/api/mixin/InvalidMixinException.java
new file mode 100644
index 0000000..10a3375
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/mixin/InvalidMixinException.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2009 Niclas Hedhman.
+ *
+ * Licensed 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.
+ */
+
+package org.apache.zest.api.mixin;
+
+import java.lang.reflect.Method;
+
+/**
+ * This exception is thrown if a Mixin is invalid (missing method implementation).
+ */
+public class InvalidMixinException
+ extends RuntimeException
+{
+ public InvalidMixinException( Class mixinClass, Method method )
+ {
+ super( mixinClass.getName() + "does not have a method implementation for " + method );
+ }
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/mixin/MixinDescriptor.java
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diff --git a/core/api/src/main/java/org/apache/zest/api/mixin/MixinDescriptor.java b/core/api/src/main/java/org/apache/zest/api/mixin/MixinDescriptor.java
new file mode 100644
index 0000000..9ae3600
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/mixin/MixinDescriptor.java
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2008, Rickard Öberg. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+
+package org.apache.zest.api.mixin;
+
+/**
+ * Mixin Descriptor.
+ */
+public interface MixinDescriptor
+{
+ Class<?> mixinClass();
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/mixin/MixinMappingException.java
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diff --git a/core/api/src/main/java/org/apache/zest/api/mixin/MixinMappingException.java b/core/api/src/main/java/org/apache/zest/api/mixin/MixinMappingException.java
new file mode 100644
index 0000000..13692a1
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/mixin/MixinMappingException.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2008 Niclas Hedhman. All rights Reserved.
+ *
+ * Licensed 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.
+ */
+package org.apache.zest.api.mixin;
+
+/**
+ * This Exception is thrown when it is not possible to map the MixinType to a valid
+ * CompositeType.
+ */
+public class MixinMappingException
+ extends RuntimeException
+{
+ private static final long serialVersionUID = 6843167709252705294L;
+
+ public MixinMappingException( String message )
+ {
+ super( message );
+ }
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/mixin/Mixins.java
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diff --git a/core/api/src/main/java/org/apache/zest/api/mixin/Mixins.java b/core/api/src/main/java/org/apache/zest/api/mixin/Mixins.java
new file mode 100644
index 0000000..1573589
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/mixin/Mixins.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2007, Rickard Öberg. All Rights Reserved.
+ * Copyright (c) 2007, Niclas Hedhman. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+
+package org.apache.zest.api.mixin;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * This annotation is used in composites to declare mixin implementation classes.
+ * <p>
+ * Mixins tells the runtime which implementation class of a Mixin should be
+ * used. The @Mixins annotation can occur at any level in the composite hierarchy
+ * and the runtime will match each found Mixin implementation against a Mixins annotation.
+ * All mixin interfaces must have a Mixin implementation in the composite hierarchy or
+ * a runtime exception will occur.
+ * </p>
+ * <p>
+ * Example;
+ * </p>
+ * <pre><code>
+ *
+ * @Mixins( MyBeerOrder.class )
+ * public interface BeerOrderComposite extends BeerOrder, Composite
+ * {
+ * }
+ *
+ * public class MyBeerOrder
+ * implements BeerOrder
+ * {
+ * :
+ * }
+ * </code></pre>
+ * <p>
+ * Many implementations can be listed,
+ * </p>
+ * <pre><code>
+ * @Mixins( { MyBeerOrder.class, DescriptionImpl.class } )
+ * public interface BeerOrderComposite extends BeerOrder, Description, Composite
+ * {
+ * }
+ * </code></pre>
+ * <p>
+ * If the Mixins is a class that implements InvocationHandler, it will be
+ * used for all mixins. To avoid that an invocation handler based implementation
+ * not service all mixin, use the AppliesTo annotation.
+ * </p>
+ *
+ * <p>
+ * It is valid to have multiple Mixins for a mixin. The first one found
+ * will be used. The search order is in the order they are written in the Mixins
+ * annotation left-to-right, and depth-first recursive search of the super-interfaces again
+ * left-to-right.
+ * </p>
+ *
+ * @see org.apache.zest.api.common.AppliesTo
+ */
+@Retention( RetentionPolicy.RUNTIME )
+@Target( ElementType.TYPE )
+@Documented
+public @interface Mixins
+{
+ Class<?>[] value();
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/mixin/NoopMixin.java
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diff --git a/core/api/src/main/java/org/apache/zest/api/mixin/NoopMixin.java b/core/api/src/main/java/org/apache/zest/api/mixin/NoopMixin.java
new file mode 100644
index 0000000..86a8a26
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/mixin/NoopMixin.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2008, Rickard Öberg. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+
+package org.apache.zest.api.mixin;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+
+/**
+ * Generic mixin that is a no-op. Can be useful if the functionality
+ * of a method is mainly provided by concerns and side-effects.
+ */
+public final class NoopMixin
+ implements InvocationHandler
+{
+ private static final Boolean BOOLEAN_DEFAULT = Boolean.FALSE;
+ private static final Short SHORT_DEFAULT = 0;
+ private static final Character CHARACTER_DEFAULT = 0;
+ private static final Integer INTEGER_DEFAULT = 0;
+ private static final Long LONG_DEFAULT = 0L;
+ private static final Float FLOAT_DEFAULT = 0f;
+ private static final Double DOUBLE_DEFAULT = 0.0;
+
+ @Override
+ public Object invoke( Object object, Method method, Object[] args )
+ throws Throwable
+ {
+ Class<?> retType = method.getReturnType();
+ if( !retType.isPrimitive() )
+ {
+ return null;
+ }
+ if( Void.TYPE == retType )
+ {
+ return null;
+ }
+ if( Boolean.TYPE == retType )
+ {
+ return BOOLEAN_DEFAULT;
+ }
+ if( Short.TYPE == retType )
+ {
+ return SHORT_DEFAULT;
+ }
+ if( Character.TYPE == retType )
+ {
+ return CHARACTER_DEFAULT;
+ }
+ if( Integer.TYPE == retType )
+ {
+ return INTEGER_DEFAULT;
+ }
+ if( Long.TYPE == retType )
+ {
+ return LONG_DEFAULT;
+ }
+ if( Float.TYPE == retType )
+ {
+ return FLOAT_DEFAULT;
+ }
+ if( Double.TYPE == retType )
+ {
+ return DOUBLE_DEFAULT;
+ }
+ return null;
+ }
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/mixin/package.html
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diff --git a/core/api/src/main/java/org/apache/zest/api/mixin/package.html b/core/api/src/main/java/org/apache/zest/api/mixin/package.html
new file mode 100644
index 0000000..a0ebe07
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/mixin/package.html
@@ -0,0 +1,21 @@
+<!--
+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.
+-->
+<html>
+ <body>
+ <h2>Mixin API.</h2>
+ </body>
+</html>
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/object/NoSuchObjectException.java
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diff --git a/core/api/src/main/java/org/apache/zest/api/object/NoSuchObjectException.java b/core/api/src/main/java/org/apache/zest/api/object/NoSuchObjectException.java
new file mode 100644
index 0000000..35e2655
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/object/NoSuchObjectException.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2008, Niclas Hedhman. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+package org.apache.zest.api.object;
+
+import org.apache.zest.api.common.InvalidApplicationException;
+
+/**
+ * This exception is thrown if no visible Object of the requested type can be found.
+ */
+public class NoSuchObjectException
+ extends InvalidApplicationException
+{
+ private static final long serialVersionUID = -1121690536365682511L;
+
+ private final String objectType;
+ private final String moduleName;
+
+ public NoSuchObjectException( String type, String moduleName )
+ {
+ super( "Could not find any visible Object of type [" + type + "] in module [" +
+ moduleName + "]." );
+ this.objectType = type;
+ this.moduleName = moduleName;
+ }
+
+ public String objectType()
+ {
+ return objectType;
+ }
+
+ public String moduleName()
+ {
+ return moduleName;
+ }
+}
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/object/ObjectDescriptor.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/object/ObjectDescriptor.java b/core/api/src/main/java/org/apache/zest/api/object/ObjectDescriptor.java
new file mode 100644
index 0000000..00c6363
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/object/ObjectDescriptor.java
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2007, Rickard Öberg. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+
+package org.apache.zest.api.object;
+
+import org.apache.zest.api.composite.ModelDescriptor;
+
+/**
+ * Object Descriptor.
+ */
+public interface ObjectDescriptor
+ extends ModelDescriptor
+{
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/object/ObjectFactory.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/object/ObjectFactory.java b/core/api/src/main/java/org/apache/zest/api/object/ObjectFactory.java
new file mode 100644
index 0000000..23b95da
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/object/ObjectFactory.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2007, Rickard Öberg. All Rights Reserved.
+ * Copyright (c) 2007, Niclas Hedhman. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+package org.apache.zest.api.object;
+
+import org.apache.zest.api.common.ConstructionException;
+
+/**
+ * This factory creates and injects POJO's.
+ */
+public interface ObjectFactory
+{
+ /**
+ * Create new objects of the given type.
+ *
+ * @param type an object class which will be instantiated.
+ *
+ * @return new objects.
+ *
+ * @throws ConstructionException Thrown if instantiation fails.
+ * @throws NoSuchObjectException Thrown if {@code type} class is not an object.
+ */
+ <T> T newObject( Class<T> type, Object... uses )
+ throws NoSuchObjectException, ConstructionException;
+
+ /**
+ * Inject an existing instance. Only fields and methods will be called.
+ *
+ * @param instance
+ *
+ * @throws ConstructionException
+ */
+ void injectTo( Object instance, Object... uses )
+ throws ConstructionException;
+}
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/object/package.html
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diff --git a/core/api/src/main/java/org/apache/zest/api/object/package.html b/core/api/src/main/java/org/apache/zest/api/object/package.html
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--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/object/package.html
@@ -0,0 +1,21 @@
+<!--
+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.
+-->
+<html>
+ <body>
+ <h2>Object API.</h2>
+ </body>
+</html>
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/package.html
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/package.html b/core/api/src/main/java/org/apache/zest/api/package.html
new file mode 100644
index 0000000..ff7d9af
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/package.html
@@ -0,0 +1,21 @@
+<!--
+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.
+-->
+<html>
+ <body>
+ <h2>Apache Zest™ API.</h2>
+ </body>
+</html>
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/property/DefaultValues.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/property/DefaultValues.java b/core/api/src/main/java/org/apache/zest/api/property/DefaultValues.java
new file mode 100644
index 0000000..db6545e
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/property/DefaultValues.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2008, Michael Hunger. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+
+package org.apache.zest.api.property;
+
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * Default values for various property types
+ */
+public final class DefaultValues
+{
+ private static final Map<Type, Object> DEFAULT_VALUES = new HashMap<Type, Object>();
+
+ static
+ {
+ DEFAULT_VALUES.put( Byte.class, 0 );
+ DEFAULT_VALUES.put( Short.class, 0 );
+ DEFAULT_VALUES.put( Character.class, 0 );
+ DEFAULT_VALUES.put( Integer.class, 0 );
+ DEFAULT_VALUES.put( Long.class, 0L );
+ DEFAULT_VALUES.put( Double.class, 0D );
+ DEFAULT_VALUES.put( Float.class, 0F );
+ DEFAULT_VALUES.put( Boolean.class, false );
+ DEFAULT_VALUES.put( String.class, "" );
+ }
+
+ public static Object getDefaultValueOf( Type type )
+ {
+ Object value = DEFAULT_VALUES.get( type );
+ if( value != null )
+ {
+ return value;
+ }
+ if( type instanceof ParameterizedType )
+ {
+ // List<Foo> -> List
+ type = ( (ParameterizedType) type ).getRawType();
+ }
+
+ if( type instanceof Class )
+ {
+ Class typeAsClass = (Class) type;
+ if( Set.class.isAssignableFrom( typeAsClass ) )
+ {
+ return new HashSet();
+ }
+ else if( Map.class.isAssignableFrom( typeAsClass ) )
+ {
+ return new LinkedHashMap();
+ }
+ else if( Collection.class.isAssignableFrom( typeAsClass ) )
+ {
+ return new ArrayList();
+ }
+ else if( typeAsClass.isEnum() )
+ {
+ return ( (Class) type ).getEnumConstants()[ 0 ];
+ }
+ }
+ throw new IllegalArgumentException( "Cannot use @UseDefaults with type " + type.toString() );
+ }
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/property/GenericPropertyInfo.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/property/GenericPropertyInfo.java b/core/api/src/main/java/org/apache/zest/api/property/GenericPropertyInfo.java
new file mode 100644
index 0000000..5c8e419
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/property/GenericPropertyInfo.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2007,2008 Niclas Hedhman.
+ *
+ * Licensed 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.
+ */
+package org.apache.zest.api.property;
+
+import java.lang.reflect.AccessibleObject;
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+
+import static org.apache.zest.api.util.Classes.typeOf;
+
+/**
+ * Generic Property info utility class.
+ */
+public final class GenericPropertyInfo
+{
+ public static Type propertyTypeOf( AccessibleObject accessor )
+ {
+ return toPropertyType( typeOf( accessor ) );
+ }
+
+ public static Type toPropertyType( Type methodReturnType )
+ {
+ if( methodReturnType instanceof ParameterizedType )
+ {
+ ParameterizedType parameterizedType = (ParameterizedType) methodReturnType;
+ if( Property.class.isAssignableFrom( (Class<?>) parameterizedType.getRawType() ) )
+ {
+ return parameterizedType.getActualTypeArguments()[ 0 ];
+ }
+ }
+
+ if( methodReturnType instanceof Class<?> )
+ {
+ Type[] interfaces = ( (Class<?>) methodReturnType ).getGenericInterfaces();
+ for( Type anInterface : interfaces )
+ {
+ Type propertyType = toPropertyType( anInterface );
+ if( propertyType != null )
+ {
+ return propertyType;
+ }
+ }
+ }
+ return null;
+ }
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/property/Immutable.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/property/Immutable.java b/core/api/src/main/java/org/apache/zest/api/property/Immutable.java
new file mode 100644
index 0000000..5611a5a
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/property/Immutable.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2008, Rickard Öberg. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+
+package org.apache.zest.api.property;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * This annotation adds Immutability to Types, Properties and Associations
+ */
+@Retention( RetentionPolicy.RUNTIME )
+@Target( { ElementType.TYPE, ElementType.METHOD } )
+@Documented
+public @interface Immutable
+{
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/property/InvalidPropertyTypeException.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/property/InvalidPropertyTypeException.java b/core/api/src/main/java/org/apache/zest/api/property/InvalidPropertyTypeException.java
new file mode 100644
index 0000000..8d5b87d
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/property/InvalidPropertyTypeException.java
@@ -0,0 +1,40 @@
+/*
+ * 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.
+ */
+package org.apache.zest.api.property;
+
+import java.lang.reflect.AccessibleObject;
+import org.apache.zest.api.common.ConstructionException;
+
+/**
+ * Thrown when attempting to subclass Property.
+ */
+public class InvalidPropertyTypeException extends ConstructionException
+{
+ public InvalidPropertyTypeException( AccessibleObject accessor )
+ {
+ super( createMessage(accessor) );
+ }
+
+ private static String createMessage( AccessibleObject accessor )
+ {
+ StringBuilder builder = new StringBuilder();
+ builder.append( "Not allowed to subclass " + Property.class.getName() + ". Property accessor " + accessor + " is returning a Property subclass." );
+ return builder.toString();
+ }
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/property/Numbers.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/property/Numbers.java b/core/api/src/main/java/org/apache/zest/api/property/Numbers.java
new file mode 100644
index 0000000..2fd39bf
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/property/Numbers.java
@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2009, Rickard Öberg. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+
+package org.apache.zest.api.property;
+
+import java.math.BigDecimal;
+
+/**
+ * Convenience class for mathematical operations on numerical properties.
+ * <pre>import static org.qi4j.api.property.Numbers.*;
+ * ...
+ * add( object.numberProperty(), 5 );</pre>
+ */
+public final class Numbers
+{
+ // Integer operations
+
+ public static Property<Integer> add( Property<Integer> property, int amount )
+ {
+ property.set( property.get() + amount );
+ return property;
+ }
+
+ public static Property<Integer> mult( Property<Integer> property, int amount )
+ {
+ property.set( property.get() * amount );
+ return property;
+ }
+
+ public static Property<Integer> sub( Property<Integer> property, int amount )
+ {
+ property.set( property.get() - amount );
+ return property;
+ }
+
+ public static Property<Integer> div( Property<Integer> property, int amount )
+ {
+ property.set( property.get() / amount );
+ return property;
+ }
+
+ // Long operations
+
+ public static Property<Long> add( Property<Long> property, long amount )
+ {
+ property.set( property.get() + amount );
+ return property;
+ }
+
+ public static Property<Long> mult( Property<Long> property, long amount )
+ {
+ property.set( property.get() * amount );
+ return property;
+ }
+
+ public static Property<Long> sub( Property<Long> property, long amount )
+ {
+ property.set( property.get() - amount );
+ return property;
+ }
+
+ public static Property<Long> div( Property<Long> property, long amount )
+ {
+ property.set( property.get() / amount );
+ return property;
+ }
+
+ // Double operations
+
+ public static Property<Double> add( Property<Double> property, double amount )
+ {
+ property.set( property.get() + amount );
+ return property;
+ }
+
+ public static Property<Double> mult( Property<Double> property, double amount )
+ {
+ property.set( property.get() * amount );
+ return property;
+ }
+
+ public static Property<Double> sub( Property<Double> property, double amount )
+ {
+ property.set( property.get() - amount );
+ return property;
+ }
+
+ public static Property<Double> div( Property<Double> property, double amount )
+ {
+ property.set( property.get() / amount );
+ return property;
+ }
+
+ // Float operations
+
+ public static Property<Float> add( Property<Float> property, float amount )
+ {
+ property.set( property.get() + amount );
+ return property;
+ }
+
+ public static Property<Float> mult( Property<Float> property, float amount )
+ {
+ property.set( property.get() * amount );
+ return property;
+ }
+
+ public static Property<Float> sub( Property<Float> property, float amount )
+ {
+ property.set( property.get() - amount );
+ return property;
+ }
+
+ public static Property<Float> div( Property<Float> property, float amount )
+ {
+ property.set( property.get() / amount );
+ return property;
+ }
+
+ // BigDecimal operations
+
+ public static Property<BigDecimal> add( Property<BigDecimal> property, BigDecimal amount )
+ {
+ property.set( property.get().add( amount ) );
+ return property;
+ }
+
+ public static Property<BigDecimal> mult( Property<BigDecimal> property, BigDecimal amount )
+ {
+ property.set( property.get().multiply( amount ) );
+ return property;
+ }
+
+ public static Property<BigDecimal> sub( Property<BigDecimal> property, BigDecimal amount )
+ {
+ property.set( property.get().subtract( amount ) );
+ return property;
+ }
+
+ public static Property<BigDecimal> div( Property<BigDecimal> property, BigDecimal amount )
+ {
+ property.set( property.get().divide( amount ) );
+ return property;
+ }
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/property/Property.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/property/Property.java b/core/api/src/main/java/org/apache/zest/api/property/Property.java
new file mode 100644
index 0000000..9721e92
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/property/Property.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2007-2011, Rickard Öberg. All Rights Reserved.
+ *
+ * Licensed 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.
+ */
+package org.apache.zest.api.property;
+
+/**
+ * Properties are declared in Composite interfaces by using this interface.
+ * <p>
+ * It creates a first-class object for the property from which you can get and set the value, and access any
+ * metadata about it.
+ * </p>
+ * <p>The type of the Property can be one of the following:</p>
+ * <ul>
+ * <li> A boxed primitive (Long,Integer,Boolean, etc.)</li>
+ * <li> String</li>
+ * <li> BigInteger</li>
+ * <li> BigDecimal</li>
+ * <li> Date</li>
+ * <li> DateTime (Joda Time)</li>
+ * <li> LocalDateTime (Joda Time)</li>
+ * <li> A serializable</li>
+ * <li> A ValueComposite</li>
+ * <li> A List, Set or Collection of any of the above</li>
+ * </ul>
+ *
+ * @param <T> Parameterized type of the Property
+ */
+public interface Property<T>
+{
+ /**
+ * Get the value of the property.
+ *
+ * @return the value
+ */
+ T get();
+
+ /**
+ * Set the value of the property
+ *
+ * @param newValue the new value
+ *
+ * @throws IllegalArgumentException if the value has an invalid value
+ * @throws IllegalStateException if the property is immutable
+ */
+ void set( T newValue )
+ throws IllegalArgumentException, IllegalStateException;
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/property/PropertyDescriptor.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/property/PropertyDescriptor.java b/core/api/src/main/java/org/apache/zest/api/property/PropertyDescriptor.java
new file mode 100644
index 0000000..649b1fc
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/property/PropertyDescriptor.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2007, Rickard Öberg. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+
+package org.apache.zest.api.property;
+
+import java.lang.reflect.AccessibleObject;
+import java.lang.reflect.Type;
+import org.apache.zest.api.common.QualifiedName;
+import org.apache.zest.api.structure.MetaInfoHolder;
+import org.apache.zest.api.structure.Module;
+import org.apache.zest.api.type.ValueType;
+
+/**
+ * Property Descriptor.
+ */
+public interface PropertyDescriptor extends MetaInfoHolder
+{
+ boolean isImmutable();
+
+ /**
+ * Get the qualified name of the property which is equal to:
+ * <pre><code>
+ * <interface name>:<method name>
+ * </code></pre>
+ *
+ * @return the qualified name of the property
+ */
+ QualifiedName qualifiedName();
+
+ /**
+ * Get the type of the property. If the property is declared
+ * as Property<X> then X is returned.
+ *
+ * @return the property type
+ */
+ Type type();
+
+ AccessibleObject accessor();
+
+ Object initialValue( Module module );
+
+ ValueType valueType();
+
+ boolean queryable();
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/property/PropertyMixin.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/property/PropertyMixin.java b/core/api/src/main/java/org/apache/zest/api/property/PropertyMixin.java
new file mode 100644
index 0000000..4e08f5c
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/property/PropertyMixin.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2007, Rickard Öberg. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+
+package org.apache.zest.api.property;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import org.apache.zest.api.common.AppliesTo;
+import org.apache.zest.api.common.AppliesToFilter;
+import org.apache.zest.api.injection.scope.State;
+
+/**
+ * Generic mixin for properties.
+ */
+// START SNIPPET: actual
+@AppliesTo( { PropertyMixin.PropertyFilter.class } )
+public final class PropertyMixin
+ implements InvocationHandler
+{
+ @State
+ private StateHolder state;
+
+ @Override
+ public Object invoke( Object proxy, Method method, Object[] args )
+ throws Throwable
+ {
+ return state.propertyFor( method );
+ }
+
+ /**
+ * Filter Property methods to apply generic Property Mixin.
+ */
+ public static class PropertyFilter
+ implements AppliesToFilter
+ {
+ @Override
+ public boolean appliesTo( Method method, Class<?> mixin, Class<?> compositeType, Class<?> modifierClass )
+ {
+ return Property.class.isAssignableFrom( method.getReturnType() );
+ }
+ }
+}
+// END SNIPPET: actual
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/property/PropertyWrapper.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/property/PropertyWrapper.java b/core/api/src/main/java/org/apache/zest/api/property/PropertyWrapper.java
new file mode 100644
index 0000000..f397908
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/property/PropertyWrapper.java
@@ -0,0 +1,71 @@
+/*
+ * 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.
+ */
+package org.apache.zest.api.property;
+
+/**
+ * If you want to catch getting and setting properties, then create a GenericConcern
+ * that wraps the Zest-supplied Property instance with PropertyWrappers. Override
+ * get() and/or set() to perform your custom code.
+ */
+public class PropertyWrapper
+ implements Property<Object>
+{
+ protected Property<Object> next;
+
+ public PropertyWrapper( Property<Object> next )
+ {
+ this.next = next;
+ }
+
+ public Property<Object> next()
+ {
+ return next;
+ }
+
+ @Override
+ public Object get()
+ {
+ return next.get();
+ }
+
+ @Override
+ public void set( Object newValue )
+ throws IllegalArgumentException, IllegalStateException
+ {
+ next.set( newValue );
+ }
+
+ @Override
+ public int hashCode()
+ {
+ return next.hashCode();
+ }
+
+ @Override
+ public boolean equals( Object obj )
+ {
+ return next.equals( obj );
+ }
+
+ @Override
+ public String toString()
+ {
+ return next.toString();
+ }
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/property/StateHolder.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/property/StateHolder.java b/core/api/src/main/java/org/apache/zest/api/property/StateHolder.java
new file mode 100644
index 0000000..d188d3d
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/property/StateHolder.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2008, Rickard Öberg. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+
+package org.apache.zest.api.property;
+
+import java.lang.reflect.AccessibleObject;
+
+/**
+ * This represents the state of a composite (properties).
+ */
+public interface StateHolder
+{
+ /**
+ * Get a property for a specific accessor
+ *
+ * @param accessor of the property
+ *
+ * @return the property
+ *
+ * @throws IllegalArgumentException if no property for given accessor exists
+ */
+ <T> Property<T> propertyFor( AccessibleObject accessor )
+ throws IllegalArgumentException;
+
+ Iterable<? extends Property<?>> properties();
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/property/package.html
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/property/package.html b/core/api/src/main/java/org/apache/zest/api/property/package.html
new file mode 100644
index 0000000..8fc2a93
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/property/package.html
@@ -0,0 +1,21 @@
+<!--
+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.
+-->
+<html>
+ <body>
+ <h2>Property API.</h2>
+ </body>
+</html>
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/query/MissingIndexingSystemException.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/query/MissingIndexingSystemException.java b/core/api/src/main/java/org/apache/zest/api/query/MissingIndexingSystemException.java
new file mode 100644
index 0000000..aca06c4
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/query/MissingIndexingSystemException.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2008, Niclas Hedhman. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+package org.apache.zest.api.query;
+
+/**
+ * This Exception is thrown in <code>QueryBuilderFactory.newQueryBuilder()</code> method if
+ * no indexing subsystem has been declared in the assembly.
+ */
+public final class MissingIndexingSystemException
+ extends QueryException
+{
+ private static final long serialVersionUID = 5147421865890379209L;
+
+ public MissingIndexingSystemException()
+ {
+ super( "No EntityFinder has been declared in the assembly of the application." );
+ }
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/query/NotQueryableException.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/query/NotQueryableException.java b/core/api/src/main/java/org/apache/zest/api/query/NotQueryableException.java
new file mode 100644
index 0000000..403ba4c
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/query/NotQueryableException.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2009 Alin Dreghiciu.
+ *
+ * Licensed 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.
+ */
+package org.apache.zest.api.query;
+
+import java.lang.reflect.AccessibleObject;
+import java.lang.reflect.Member;
+import org.apache.zest.api.entity.Queryable;
+import org.apache.zest.api.property.GenericPropertyInfo;
+import org.apache.zest.api.util.Classes;
+
+/**
+ * Thrown in case that a non queryable type or accessor (marked with @Queriable(false)) is used during query building,
+ * or when non-Property, non-Associations are trying to be queried (possibly can not happen).
+ */
+public class NotQueryableException
+ extends QueryException
+{
+ private static final long serialVersionUID = 1L;
+
+ /**
+ * Constructor.
+ *
+ * @param message exception message
+ */
+ public NotQueryableException( final String message )
+ {
+ super( message );
+ }
+
+ /**
+ * Verify that the provided accessor method has not been marked with a Queryable(false).
+ *
+ * @param accessor accessor method
+ *
+ * @throws NotQueryableException - If accessor method has been marked as not queryable
+ */
+ public static void throwIfNotQueryable( final AccessibleObject accessor )
+ {
+ Queryable queryable = accessor.getAnnotation( Queryable.class );
+ if( queryable != null && !queryable.value() )
+ {
+ throw new NotQueryableException(
+ String.format(
+ "%1$s \"%2$s\" (%3$s) is not queryable as has been marked with @Queryable(false)",
+ Classes.RAW_CLASS.map( GenericPropertyInfo.propertyTypeOf( accessor ) ).getSimpleName(),
+ ( (Member) accessor ).getName(),
+ ( (Member) accessor ).getDeclaringClass().getName()
+ )
+ );
+ }
+ }
+
+ /**
+ * Verify that the provided type has not been marked with a Queryable(false).
+ *
+ * @param type a type
+ *
+ * @throws NotQueryableException - If type has been marked as not queryable
+ */
+ public static void throwIfNotQueryable( final Class<?> type )
+ {
+ Queryable queryable = type.getAnnotation( Queryable.class );
+ if( queryable != null && !queryable.value() )
+ {
+ throw new NotQueryableException(
+ String.format(
+ "Type \"%1$s\" is not queryable as has been marked with @Queryable(false)",
+ type.getName()
+ )
+ );
+ }
+ }
+}
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/query/Query.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/query/Query.java b/core/api/src/main/java/org/apache/zest/api/query/Query.java
new file mode 100644
index 0000000..84e2c9c
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/query/Query.java
@@ -0,0 +1,138 @@
+/*
+ * Copyright 2007 Rickard Öberg.
+ * Copyright 2007 Niclas Hedhman.
+ * Copyright 2008 Alin Dreghiciu.
+ *
+ * Licensed 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.
+ *
+ */
+package org.apache.zest.api.query;
+
+import java.io.Serializable;
+import org.apache.zest.api.property.Property;
+import org.apache.zest.api.query.grammar.OrderBy;
+
+/**
+ * This represents a Query in an indexing system. It is created from a
+ * {@link QueryBuilder}, which decides the "where" clause in the query.
+ * <p>
+ * Additional limitations, such as paging, ordering, and variables, can be set on
+ * a Query before it is executed by calling one of find(), iterator(),
+ * or count().
+ * </p>
+ * <p>
+ * DDD tip: typically Queries are created in the Domain Model and passed to the UI,
+ * which sets the order and paging before executing it.
+ * </p>
+ */
+public interface Query<T>
+ extends Iterable<T>, Serializable
+{
+ /**
+ * Set the ordering rules. If many segments are used for ordering
+ * then they will be applied in order.
+ *
+ * @param segments the segments to order by
+ *
+ * @return the Query
+ */
+ Query<T> orderBy( OrderBy... segments );
+
+ /**
+ * Append an ordering rule to the existing segments.
+ *
+ * @param property the property to order by
+ * @param order the order to apply
+ *
+ * @return the Query
+ */
+ Query<T> orderBy( final Property<?> property, final OrderBy.Order order );
+
+ /**
+ * Append an ascending ordering rule to the existing segments.
+ *
+ * @param property the property to order by
+ *
+ * @return the Query
+ */
+ Query<T> orderBy( Property<?> property );
+
+ /**
+ * Set the index of the first result. Default is 0 (zero).
+ *
+ * @param firstResult which index to use as the first one
+ *
+ * @return the Query
+ */
+ Query<T> firstResult( int firstResult );
+
+ /**
+ * Set how many results should be returned. Default is that
+ * there is no limit set.
+ *
+ * @param maxResults that shouldbe returned
+ *
+ * @return the query
+ */
+ Query<T> maxResults( int maxResults );
+
+ /**
+ * Get the first Entity that matches the criteria. This
+ * executes the Query.
+ *
+ * @return the first found Entity or null if none were found
+ *
+ * @throws QueryExecutionException if the query fails
+ */
+ T find()
+ throws QueryExecutionException;
+
+ /**
+ * Set the value of a named variable.
+ *
+ * @param name of the variable
+ * @param value of the variable
+ *
+ * @return the query
+ */
+ Query<T> setVariable( String name, Object value );
+
+ /**
+ * Get the value of a named variable.
+ *
+ * @param name of the variable
+ *
+ * @return value of the variable
+ */
+ <V> V getVariable( String name );
+
+ /**
+ * Get the result type of this Query
+ *
+ * @return the result type
+ */
+ Class<T> resultType();
+
+ /**
+ * Count how many results would be returned by this Query.
+ * This executes the Query.
+ *
+ * @return result count
+ *
+ * @throws QueryExecutionException if the query fails
+ */
+ long count()
+ throws QueryExecutionException;
+}
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/query/QueryBuilder.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/query/QueryBuilder.java b/core/api/src/main/java/org/apache/zest/api/query/QueryBuilder.java
new file mode 100644
index 0000000..38b010c
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/query/QueryBuilder.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2007 Rickard Öberg.
+ * Copyright 2008 Alin Dreghiciu.
+ *
+ * Licensed 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.
+ *
+ */
+package org.apache.zest.api.query;
+
+import org.apache.zest.api.composite.Composite;
+import org.apache.zest.functional.Specification;
+
+/**
+ * QueryBuilders are used to create {@link Query} instances.
+ * Iteratively add where() clauses to the query, and then use
+ * {@link org.apache.zest.api.unitofwork.UnitOfWork#newQuery(QueryBuilder)} to instantiate the Query.
+ * QueryBuilders are immutable, so when adding new where-clauses you get new instances. This
+ *
+ * DDD tip: Query objects are not executed immediately, so they
+ * should be constructed in the domain model and handed over to
+ * the UI, which can then further constrain it before actual
+ * execution.
+ */
+public interface QueryBuilder<T>
+{
+ /**
+ * Add a where-clause to the Query. Use {@link QueryExpressions}
+ * to create the expression.
+ *
+ * @param specification the where clause
+ *
+ * @return a new builder with the added where-clause
+ */
+ QueryBuilder<T> where( Specification<Composite> specification );
+
+ /**
+ * Create a new query with the declared where-clauses that will be evaluated against the iterable entries.
+ *
+ * @param iterable collection of objects (composites?)
+ *
+ * @return a new Query instance
+ */
+ Query<T> newQuery( Iterable<T> iterable );
+}
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/query/QueryBuilderFactory.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/query/QueryBuilderFactory.java b/core/api/src/main/java/org/apache/zest/api/query/QueryBuilderFactory.java
new file mode 100644
index 0000000..fe40289
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/query/QueryBuilderFactory.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2007 Niclas Hedhman.
+ *
+ * Licensed 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.
+ */
+package org.apache.zest.api.query;
+
+/**
+ * This is used to create QueryBuilders.
+ *
+ * @see QueryBuilder
+ */
+public interface QueryBuilderFactory
+{
+ /**
+ * Create a new QueryBuilder.
+ *
+ * @param resultType the type of the result that you want
+ *
+ * @return a QueryBuilder
+ *
+ * @throws MissingIndexingSystemException if there is no EntityFinder service available
+ */
+ <T> QueryBuilder<T> newQueryBuilder( Class<T> resultType )
+ throws MissingIndexingSystemException;
+}
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/query/QueryException.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/query/QueryException.java b/core/api/src/main/java/org/apache/zest/api/query/QueryException.java
new file mode 100644
index 0000000..a0bd0f6
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/query/QueryException.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2008, Niclas Hedhman. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+package org.apache.zest.api.query;
+
+/**
+ * Base class for Query exceptions.
+ */
+public abstract class QueryException
+ extends RuntimeException
+{
+ private static final long serialVersionUID = -3602596752342902060L;
+
+ public QueryException()
+ {
+ }
+
+ public QueryException( final String message )
+ {
+ super( message );
+ }
+
+ public QueryException( final String message, final Throwable cause )
+ {
+ super( message, cause );
+ }
+}
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/query/QueryExecutionException.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/query/QueryExecutionException.java b/core/api/src/main/java/org/apache/zest/api/query/QueryExecutionException.java
new file mode 100644
index 0000000..f068843
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/query/QueryExecutionException.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2008, Rickard Öberg. All Rights Reserved.
+ *
+ * Licensed 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.
+ *
+ */
+package org.apache.zest.api.query;
+
+/**
+ * Throw this exception if a query could not be executed
+ */
+public final class QueryExecutionException
+ extends QueryException
+{
+ private static final long serialVersionUID = 5147421865890379209L;
+
+ public QueryExecutionException( String message )
+ {
+ super( message );
+ }
+
+ public QueryExecutionException( String message, Throwable cause )
+ {
+ super( message, cause );
+ }
+}
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/zest-java/blob/8744a67f/core/api/src/main/java/org/apache/zest/api/query/QueryExpressionException.java
----------------------------------------------------------------------
diff --git a/core/api/src/main/java/org/apache/zest/api/query/QueryExpressionException.java b/core/api/src/main/java/org/apache/zest/api/query/QueryExpressionException.java
new file mode 100644
index 0000000..676bed0
--- /dev/null
+++ b/core/api/src/main/java/org/apache/zest/api/query/QueryExpressionException.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2009 Niclas Hedhman.
+ *
+ * Licensed 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.
+ */
+package org.apache.zest.api.query;
+
+/**
+ * Throw this exception if a QueryExpression is invalid.
+ */
+public class QueryExpressionException
+ extends QueryException
+{
+
+ private static final long serialVersionUID = 1L;
+
+ public QueryExpressionException( String message )
+ {
+ super( message );
+ }
+
+}