| author | Jaroslav Tulach <jtulach@netbeans.org> |
| Sat, 14 Jun 2008 09:56:12 +0200 | |
| changeset 132 | 3bc4c54f4bcc |
| parent 101 | c27834b52df0 |
| child 153 | b5cbb797ec0a |
| permissions | -rw-r--r-- |
| jtulach@101 | 1 |
package org.apidesign.misuse.projectconfig; |
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public class ProjectConfigurationCorrect {
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// BEGIN: misuse.prjconfig.correct |
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interface ProjectConfigurationProvider |
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<Configuration extends ProjectConfiguration> {
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Configuration[] getConfigurations(); |
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Configuration getActive(); |
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void setActive(Configuration c); |
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} |
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interface ProjectConfiguration {
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public String getDisplayName(); |
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} |
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// END: misuse.prjconfig.correct |
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/* Following does not work: |
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static {
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// BEGIN: misuse.prjconfig.correct.trivial.access |
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ProjectConfigurationProvider<?> provider = null; // obtain elsewhere; |
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provider.setActive(provider.getConfigurations()[0]); |
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// END: misuse.prjconfig.correct.trivial.access |
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} |
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*/ |
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static {
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// BEGIN: misuse.prjconfig.correct.access |
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ProjectConfigurationProvider<?> provider = null; // obtain elsewhere; |
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resetToZero(provider); |
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// END: misuse.prjconfig.correct.access |
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} |
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// BEGIN: misuse.prjconfig.correct.openmethod |
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private static <C extends ProjectConfiguration> void resetToZero( |
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ProjectConfigurationProvider<C> provider |
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) {
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provider.setActive(provider.getConfigurations()[0]); |
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} |
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// END: misuse.prjconfig.correct.openmethod |
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// BEGIN: misuse.prjconfig.correct.openclass |
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static void workWithProjectConfigurationProvider( |
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ProjectConfigurationProvider<?> p |
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) {
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ResetToZero<?> rtz = ResetToZero.create(p); |
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rtz.obtainFirst(); |
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// after a while |
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rtz.apply(); |
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} |
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static class ResetToZero<C extends ProjectConfiguration> {
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C active; |
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final ProjectConfigurationProvider<C> provider; |
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ResetToZero(ProjectConfigurationProvider<C> provider) {
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this.provider = provider; |
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} |
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static <C extends ProjectConfiguration> ResetToZero<C> create( |
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ProjectConfigurationProvider<C> p |
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) {
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return new ResetToZero<C>(p); |
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} |
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public void obtainFirst() {
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active = provider.getConfigurations()[0]; |
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} |
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public void apply() {
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provider.setActive(active); |
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} |
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} |
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// END: misuse.prjconfig.correct.openclass |
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} |