Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
ExecutionOptions |
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1 | /** | |
2 | * Copyright 2005-2011 The Kuali Foundation | |
3 | * | |
4 | * Licensed under the Educational Community License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at | |
7 | * | |
8 | * http://www.opensource.org/licenses/ecl2.php | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | package org.kuali.rice.krms.api.engine; | |
17 | ||
18 | import java.util.Collections; | |
19 | import java.util.HashMap; | |
20 | import java.util.Map; | |
21 | ||
22 | import org.apache.commons.lang.StringUtils; | |
23 | ||
24 | /** | |
25 | * The ExecutionOptions contain a set of options that can be passed to the KRMS | |
26 | * engine to control certain aspects related to it's execution. It supports | |
27 | * two different types of options: | |
28 | * | |
29 | * <ol> | |
30 | * <li>flags - a map of pre-defined boolean {@link ExecutionFlag} instances which can be either true or false</li> | |
31 | * <li>options - a general-purpose map of Strings which can be used to define optinos that have non-boolen values</li> | |
32 | * </ol> | |
33 | * | |
34 | * <p>The options map can be used to pass user-defined or provider-specific options. The ExecutionOptions are made | |
35 | * available as part of the {@link ExecutionEnvironment} during engine execution. | |
36 | * | |
37 | * <p>Instances of ExecutionOptions are not safe for use by multiple threads. | |
38 | * | |
39 | * @author Kuali Rice Team (rice.collab@kuali.org) | |
40 | * | |
41 | */ | |
42 | public final class ExecutionOptions { | |
43 | ||
44 | private final Map<ExecutionFlag, Boolean> flags; | |
45 | private final Map<String, String> options; | |
46 | ||
47 | /** | |
48 | * Construct an empty set of execution options. | |
49 | */ | |
50 | 0 | public ExecutionOptions() { |
51 | 0 | flags = new HashMap<ExecutionFlag, Boolean>(); |
52 | 0 | options = new HashMap<String, String>(); |
53 | 0 | } |
54 | ||
55 | /** | |
56 | * Constructs a new set of execution options, initialized with all options | |
57 | * and flags copied from the given set of execution options. | |
58 | * | |
59 | * @param executionOptions the execution options from which to copy into the newly created instance. | |
60 | * If the given execution options are null, then this constructor is equivalent to {@link ExecutionOptions#ExecutionOptions()} | |
61 | */ | |
62 | public ExecutionOptions(ExecutionOptions executionOptions) { | |
63 | 0 | this(); |
64 | 0 | if (executionOptions != null) { |
65 | 0 | this.flags.putAll(executionOptions.getFlags()); |
66 | 0 | this.options.putAll(executionOptions.getOptions()); |
67 | } | |
68 | 0 | } |
69 | ||
70 | /** | |
71 | * Sets the value for the given flag to the given boolean value. | |
72 | * | |
73 | * @param flag the flag to set | |
74 | * @param value the flag value to set | |
75 | * @return a reference to this object | |
76 | * | |
77 | * @throws IllegalArgumentException if the given flag is null | |
78 | */ | |
79 | public ExecutionOptions setFlag(ExecutionFlag flag, boolean value) { | |
80 | 0 | if (flag == null) { |
81 | 0 | throw new IllegalArgumentException("flag was null"); |
82 | } | |
83 | 0 | flags.put(flag, value); |
84 | 0 | return this; |
85 | } | |
86 | ||
87 | /** | |
88 | * Sets the value for the given option name to the given value. | |
89 | * | |
90 | * @param optionName the name of the option to set | |
91 | * @param value the value of the option to set | |
92 | * @return a reference to this object | |
93 | * | |
94 | * @throws IllegalArgumentException if the given optionName is blank | |
95 | */ | |
96 | public ExecutionOptions setOption(String optionName, String value) { | |
97 | 0 | if (StringUtils.isBlank(optionName)) { |
98 | 0 | throw new IllegalArgumentException("optionName was blank"); |
99 | } | |
100 | 0 | options.put(optionName, value); |
101 | 0 | return this; |
102 | } | |
103 | ||
104 | /** | |
105 | * Removes the specified flag (if it has been set) from the set of execution options. | |
106 | * If the flag is not currently set, this method will do nothing. | |
107 | * | |
108 | * @param flag the flag to remove | |
109 | * @return a reference to this object | |
110 | * | |
111 | * @throws IllegalArgumentException if the given flag is null | |
112 | */ | |
113 | public ExecutionOptions removeFlag(ExecutionFlag flag) { | |
114 | 0 | if (flag == null) { |
115 | 0 | throw new IllegalArgumentException("flag was null"); |
116 | } | |
117 | 0 | flags.remove(flag); |
118 | 0 | return this; |
119 | } | |
120 | ||
121 | /** | |
122 | * Removes the option with the specified name (if it has been set) from the set | |
123 | * of execution options. If the option is not currently set, this method will | |
124 | * do nothing. | |
125 | * | |
126 | * @param optionName the name of the option to remove | |
127 | * @return a reference to this object | |
128 | * | |
129 | * @throws IllegalArgumentException if the given optionName is blank | |
130 | */ | |
131 | public ExecutionOptions removeOption(String optionName) { | |
132 | 0 | if (StringUtils.isBlank(optionName)) { |
133 | 0 | throw new IllegalArgumentException("optionName was blank"); |
134 | } | |
135 | 0 | options.remove(optionName); |
136 | 0 | return this; |
137 | } | |
138 | ||
139 | /** | |
140 | * Returns the value the given flag. If the specified flag has not been set | |
141 | * on this object, then {@link ExecutionFlag#getDefaultValue()} will be returned. | |
142 | * | |
143 | * @param flag the flag to check | |
144 | * @return the value of the flag, or the flag's default value if the flag value | |
145 | * is not currently set on this object | |
146 | * | |
147 | * @throws IllegalArgumentException if the given flag is null | |
148 | */ | |
149 | public boolean getFlag(ExecutionFlag flag) { | |
150 | 0 | if (flag == null) { |
151 | 0 | throw new IllegalArgumentException("flag is null"); |
152 | } | |
153 | 0 | if (isFlagSet(flag)) { |
154 | 0 | return flags.get(flag).booleanValue(); |
155 | } | |
156 | 0 | return flag.getDefaultValue(); |
157 | } | |
158 | ||
159 | /** | |
160 | * Returns the value for the option with the given name, or null | |
161 | * if the option is not set. | |
162 | * | |
163 | * @param optionName the name of the option for which to retrieve the value | |
164 | * @return the value of the option, or null if the option is not set | |
165 | * | |
166 | * @throws IllegalArgumentException if the given optionName is blank | |
167 | */ | |
168 | public String getOption(String optionName) { | |
169 | 0 | if (StringUtils.isBlank(optionName)) { |
170 | 0 | throw new IllegalArgumentException("optionName is blank"); |
171 | } | |
172 | 0 | return options.get(optionName); |
173 | } | |
174 | ||
175 | /** | |
176 | * Checks whether or not the given flag is set. | |
177 | * | |
178 | * @param flag the flag to check | |
179 | * @return true if the flag is set, false if not | |
180 | * | |
181 | * @throws IllegalArgumentException if the given flag is null | |
182 | */ | |
183 | public boolean isFlagSet(ExecutionFlag flag) { | |
184 | 0 | if (flag == null) { |
185 | 0 | throw new IllegalArgumentException("flag is null"); |
186 | } | |
187 | 0 | return flags.containsKey(flag); |
188 | } | |
189 | ||
190 | /** | |
191 | * Checks whether or not the option with the given name has been set. | |
192 | * | |
193 | * @param optionName the name of the option to check | |
194 | * @return true if the option is set, false if not | |
195 | * | |
196 | * @throws IllegalArgumentException if the given optionName is blank | |
197 | */ | |
198 | public boolean isOptionSet(String optionName) { | |
199 | 0 | if (StringUtils.isBlank(optionName)) { |
200 | 0 | throw new IllegalArgumentException("optionName is blank"); |
201 | } | |
202 | 0 | return options.containsKey(optionName); |
203 | } | |
204 | ||
205 | /** | |
206 | * Returns an immutable map of the flags that have been set on this object. | |
207 | * | |
208 | * @return the flags that have been set, this map be empty but will never be null | |
209 | */ | |
210 | public Map<ExecutionFlag, Boolean> getFlags() { | |
211 | 0 | return Collections.unmodifiableMap(new HashMap<ExecutionFlag, Boolean>(flags)); |
212 | } | |
213 | ||
214 | /** | |
215 | * Returns an immutable map of the options that have been set on this object. | |
216 | * | |
217 | * @return the options that have been set, this map be empty but will never be null | |
218 | */ | |
219 | public Map<String, String> getOptions() { | |
220 | 0 | return Collections.unmodifiableMap(new HashMap<String, String>(options)); |
221 | } | |
222 | ||
223 | } |