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                                                    <td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin: 10px 0 0; margin-top: 0">Another interesting solution for filters built in this way. It is possible to define a filter in a set with a binding field.</p> 
                                                        <div class="code panel" style="border-width: 1px;; border: 1px solid #cccccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #cccccc; -moz-border-radius: 3px; border-radius: 3px; margin: 9px 0">
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                                                                <pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal"><span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">class </span>PermissionsBinder <span class="code-keyword" style="color: #000091">implements</span> TypeBinder {

    <span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> fieldName = <span class="code-quote" style="color: #009100">"permissions"</span>;
    <span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> operationName = <span class="code-quote" style="color: #009100">"read"</span>;

    <span class="code-keyword" style="color: #000091">public</span> PermissionsBinder fieldName(<span class="code-object" style="color: #910091">String</span> fieldName) {
        <span class="code-keyword" style="color: #000091">this</span>.fieldName = fieldName;
        <span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">this</span>;
    }

    <span class="code-keyword" style="color: #000091">public</span> PermissionsBinder operationName(<span class="code-object" style="color: #910091">String</span> operationName) {
        <span class="code-keyword" style="color: #000091">this</span>.operationName = operationName;
        <span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">this</span>;
    }

    @Override
    <span class="code-keyword" style="color: #000091">public</span> void bind(TypeBindingContext context) {
        context.getDependencies().useRootOnly();

        IndexFieldReference&lt;<span class="code-object" style="color: #910091">String</span>&gt; permissionsField = context.getIndexSchemaElement()
                .field(<span class="code-keyword" style="color: #000091">this</span>.fieldName, f -&gt; f.asString().analyzer(<span class="code-quote" style="color: #009100">"permissions"</span>))
                .toReference();

        context.getIndexSchemaElement().filter(<span class="code-quote" style="color: #009100">"is-permission"</span>, <span class="code-keyword" style="color: #000091">new</span> Filter())
                .param(<span class="code-quote" style="color: #009100">"operation"</span>, operationName)
                .param(<span class="code-quote" style="color: #009100">"field"</span>, <span class="code-keyword" style="color: #000091">this</span>.fieldName)
                .toReference();

        context.setBridge(<span class="code-keyword" style="color: #000091">new</span> Bridge(
                permissionsField
        ));
    }

    <span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">class </span>Bridge <span class="code-keyword" style="color: #000091">implements</span> TypeBridge {

        <span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">final</span> IndexFieldReference&lt;<span class="code-object" style="color: #910091">String</span>&gt; permissionsField;

        <span class="code-keyword" style="color: #000091">protected</span> IdentityStoreResolver getIdentityService() {
            IdentityStoreResolver isr = ServiceLocator.getService(IdentityStoreResolver.class, IdentityStoreResolver.JNDI_NAME);
            <span class="code-keyword" style="color: #000091">return</span> isr;
        }

        <span class="code-keyword" style="color: #000091">private</span> Bridge(IndexFieldReference&lt;<span class="code-object" style="color: #910091">String</span>&gt; permissionsField) {
            <span class="code-keyword" style="color: #000091">this</span>.permissionsField = permissionsField;
        }

        @Override
        <span class="code-keyword" style="color: #000091">public</span> void write(DocumentElement target, <span class="code-object" style="color: #910091">Object</span> bridgedElement, TypeBridgeWriteContext context) {
            StringBuilder brules = <span class="code-keyword" style="color: #000091">new</span> StringBuilder();

            IdentityStoreResolver isr = getIdentityService();
            PermissionManager pm = isr.getPermissionManager();

            List&lt;Permission&gt; permissions = pm.listPermissions(bridgedElement);
            <span class="code-keyword" style="color: #000091">for</span> (Permission permission : permissions) {
                IdentityType assignee = permission.getAssignee();

                <span class="code-keyword" style="color: #000091">if</span> (assignee <span class="code-keyword" style="color: #000091">instanceof</span> Group) {
                    <span class="code-object" style="color: #910091">String</span>[] roles = permission.getRoles();
                    <span class="code-keyword" style="color: #000091">if</span> (roles == <span class="code-keyword" style="color: #000091">null</span> || roles.length &lt; 1) {
                        roles = <span class="code-keyword" style="color: #000091">new</span> <span class="code-object" style="color: #910091">String</span>[]{<span class="code-quote" style="color: #009100">"*"</span>};
                    }
                    <span class="code-keyword" style="color: #000091">for</span> (<span class="code-object" style="color: #910091">String</span> role : roles) {
                        brules.append(permission.getOperation()).append(<span class="code-quote" style="color: #009100">":"</span>);
                        brules.append(permission.getContext()).append(<span class="code-quote" style="color: #009100">":"</span>);
                        brules.append(permission.getPath()).append(<span class="code-quote" style="color: #009100">":"</span>);
                        brules.append(role);
                        brules.append(<span class="code-quote" style="color: #009100">"\n"</span>);
                    }
                } <span class="code-keyword" style="color: #000091">else</span> {
                    brules.append(permission.getOperation()).append(<span class="code-quote" style="color: #009100">":"</span>);
                    brules.append(permission.getContext()).append(<span class="code-quote" style="color: #009100">":"</span>);
                    brules.append(permission.getPath());
                    brules.append(<span class="code-quote" style="color: #009100">"\n"</span>);
                }
            }

            target.addValue(<span class="code-keyword" style="color: #000091">this</span>.permissionsField, brules.toString());
        }
    }

    <span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">class </span>Filter <span class="code-keyword" style="color: #000091">implements</span> FilterFactory {

        @Override
        <span class="code-keyword" style="color: #000091">public</span> SearchPredicate create(FilterFactoryContext ctx) {
            SearchPredicate filter;
            SearchPredicateFactory predicate = ctx.predicate();

            Account user = ctx.param(<span class="code-quote" style="color: #009100">"user"</span>);
            <span class="code-object" style="color: #910091">String</span> fieldPath = ctx.resolvePath(ctx.param(<span class="code-quote" style="color: #009100">"field"</span>));
            <span class="code-object" style="color: #910091">String</span> operation = ctx.param(<span class="code-quote" style="color: #009100">"operation"</span>);

            <span class="code-keyword" style="color: #000091">if</span> (operation == <span class="code-keyword" style="color: #000091">null</span>) {
                operation = <span class="code-quote" style="color: #009100">"read"</span>;
            }

            PermissionQuery query = <span class="code-keyword" style="color: #000091">new</span> PermissionQuery(fieldPath, operation, user);
            filter = predicate.extension(LuceneExtension.get())
                    .fromLuceneQuery(query)
                    .toPredicate();

            <span class="code-keyword" style="color: #000091">return</span> filter;
        }

    }

}
</pre> 
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    "name": "View Comment"
      },
  "publisher": {
    "@type": "Organization",
    "name": "Atlassian",
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  }
}
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