[Minor] Throw exception if policy is missing proper constructor
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@ -1,12 +1,12 @@
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/*
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* Copyright 2015 Robert von Burg <eitch@eitchnet.ch>
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*
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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@ -37,19 +37,19 @@ import li.strolch.utils.helper.XmlHelper;
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/**
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* <p>
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* This is the default Strolch {@link PolicyHandler} which implements {@link PolicyDefVisitor}. This
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* {@link PolicyHandler} parses a policy configuration file to handle the look-up of {@link KeyPolicyDef}
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* This is the default Strolch {@link PolicyHandler} which implements {@link PolicyDefVisitor}. This {@link
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* PolicyHandler} parses a policy configuration file to handle the look-up of {@link KeyPolicyDef}
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* </p>
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*
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*
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* This {@link StrolchComponent} uses two configuration properties:
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* <ul>
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* <li>{@link #PROP_READ_POLICY_FILE} - Default is false. If false then no configuration file is read. Useful if all
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* policy definitions are {@link JavaPolicyDef}</li>
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* <li>{@link #PROP_POLICY_CONFIG} - Default is {@link #DEF_STROLCH_POLICIES_XML}. If {@link #PROP_READ_POLICY_FILE} is
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* true, then this property is used to determine which configuration file to parse for the policy key mappings for
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* {@link KeyPolicyDef}</li>
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* <li>{@link #PROP_READ_POLICY_FILE} - Default is false. If false then no configuration file is
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* read. Useful if all policy definitions are {@link JavaPolicyDef}</li>
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* <li>{@link #PROP_POLICY_CONFIG} - Default is {@link #DEF_STROLCH_POLICIES_XML}. If {@link
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* #PROP_READ_POLICY_FILE} is true, then this property is used to determine which configuration file to parse for the
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* policy key mappings for {@link KeyPolicyDef}</li>
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* </ul>
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*
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*
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* @author Robert von Burg <eitch@eitchnet.ch>
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*/
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public class DefaultPolicyHandler extends StrolchComponent implements PolicyHandler, PolicyDefVisitor {
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@ -84,10 +84,12 @@ public class DefaultPolicyHandler extends StrolchComponent implements PolicyHand
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Class<T> clazz = policyDef.accept(this);
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Constructor<T> constructor = clazz.getConstructor(ComponentContainer.class, StrolchTransaction.class);
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if (constructor == null)
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throw new IllegalStateException(
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"Class" + clazz.getName() + " is missing constructor (ComponentContainer, StrolchTransaction)");
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return constructor.newInstance(getContainer(), tx);
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} catch (NoSuchMethodException | SecurityException | InstantiationException | IllegalAccessException
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| IllegalArgumentException | InvocationTargetException | ClassNotFoundException e) {
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} catch (NoSuchMethodException | SecurityException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException | ClassNotFoundException e) {
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throw new StrolchPolicyException(
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MessageFormat.format("Failed to instantiate policy {0} due to {1}", policyDef, e.getMessage()), e);
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}
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@ -146,9 +148,10 @@ public class DefaultPolicyHandler extends StrolchComponent implements PolicyHand
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// assert API is a Policy
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if (!StrolchPolicy.class.isAssignableFrom(implClass)) {
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throw new StrolchPolicyException("Invalid " + StrolchPolicyFileParser.POLICY
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+ " configuration for Type=" + type + " Key=" + key + " as " + className
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+ " is not a " + StrolchPolicy.class.getName());
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throw new StrolchPolicyException(
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"Invalid " + StrolchPolicyFileParser.POLICY + " configuration for Type=" + type
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+ " Key=" + key + " as " + className + " is not a " + StrolchPolicy.class
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.getName());
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}
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if (!apiClass.isAssignableFrom(implClass)) {
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@ -162,13 +165,15 @@ public class DefaultPolicyHandler extends StrolchComponent implements PolicyHand
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this.classByTypeMap.addElement(type, key, (Class<? extends StrolchPolicy>) implClass);
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} catch (ClassNotFoundException e) {
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throw new StrolchPolicyException("Invalid " + StrolchPolicyFileParser.POLICY
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+ " configuration for Type=" + type + " Key=" + key + " due to " + e.getMessage(), e);
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throw new StrolchPolicyException(
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"Invalid " + StrolchPolicyFileParser.POLICY + " configuration for Type=" + type
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+ " Key=" + key + " due to " + e.getMessage(), e);
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}
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}
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} catch (ClassNotFoundException e) {
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throw new StrolchPolicyException("Invalid " + StrolchPolicyFileParser.POLICY_TYPE
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+ " configuration for Type=" + type + " due to " + e.getMessage(), e);
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throw new StrolchPolicyException(
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"Invalid " + StrolchPolicyFileParser.POLICY_TYPE + " configuration for Type=" + type
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+ " due to " + e.getMessage(), e);
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}
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}
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}
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