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Posted to commits@camel.apache.org by da...@apache.org on 2016/01/04 13:44:17 UTC

[5/7] camel git commit: CAMEL-9472: Add multi value to component docs

CAMEL-9472: Add multi value to component docs


Project: http://git-wip-us.apache.org/repos/asf/camel/repo
Commit: http://git-wip-us.apache.org/repos/asf/camel/commit/fc4bbc2e
Tree: http://git-wip-us.apache.org/repos/asf/camel/tree/fc4bbc2e
Diff: http://git-wip-us.apache.org/repos/asf/camel/diff/fc4bbc2e

Branch: refs/heads/camel-2.16.x
Commit: fc4bbc2e826441cc2aa6f2856620099ada9b24b8
Parents: b234404
Author: Claus Ibsen <da...@apache.org>
Authored: Mon Jan 4 12:18:50 2016 +0100
Committer: Claus Ibsen <da...@apache.org>
Committed: Mon Jan 4 13:43:18 2016 +0100

----------------------------------------------------------------------
 .../camel/impl/ScheduledPollEndpoint.java       |  2 +-
 .../camel/catalog/DefaultCamelCatalog.java      | 30 ++++++++---
 .../apache/camel/catalog/JSonSchemaHelper.java  | 52 ++++++++++++++++++++
 .../apache/camel/catalog/CamelCatalogTest.java  |  4 ++
 .../camel/tools/apt/EipAnnotationProcessor.java |  2 +-
 .../tools/apt/EndpointAnnotationProcessor.java  | 25 +++++++---
 .../tools/apt/helper/JsonSchemaHelper.java      | 12 ++++-
 .../camel/tools/apt/model/EndpointOption.java   | 15 +++++-
 .../tools/apt/EndpointOptionComparatorTest.java |  8 +--
 .../java/org/apache/camel/spi/UriParam.java     | 12 +++++
 10 files changed, 139 insertions(+), 23 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/camel/blob/fc4bbc2e/camel-core/src/main/java/org/apache/camel/impl/ScheduledPollEndpoint.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/impl/ScheduledPollEndpoint.java b/camel-core/src/main/java/org/apache/camel/impl/ScheduledPollEndpoint.java
index 13335c9..6d1b938 100644
--- a/camel-core/src/main/java/org/apache/camel/impl/ScheduledPollEndpoint.java
+++ b/camel-core/src/main/java/org/apache/camel/impl/ScheduledPollEndpoint.java
@@ -76,7 +76,7 @@ public abstract class ScheduledPollEndpoint extends DefaultEndpoint {
             defaultValue = "none", label = "consumer,scheduler", description = "To use a cron scheduler from either camel-spring or camel-quartz2 component")
     private ScheduledPollConsumerScheduler scheduler;
     private String schedulerName = "none"; // used when configuring scheduler using a string value
-    @UriParam(optionalPrefix = "consumer.", label = "consumer,scheduler",
+    @UriParam(prefix = "scheduler.", multiValue = true, label = "consumer,scheduler",
             description = "To configure additional properties when using a custom scheduler or any of the Quartz2, Spring based scheduler.")
     private Map<String, Object> schedulerProperties;
     @UriParam(optionalPrefix = "consumer.", label = "consumer,scheduler",

http://git-wip-us.apache.org/repos/asf/camel/blob/fc4bbc2e/platforms/catalog/src/main/java/org/apache/camel/catalog/DefaultCamelCatalog.java
----------------------------------------------------------------------
diff --git a/platforms/catalog/src/main/java/org/apache/camel/catalog/DefaultCamelCatalog.java b/platforms/catalog/src/main/java/org/apache/camel/catalog/DefaultCamelCatalog.java
index a4e638a..79a50bf 100644
--- a/platforms/catalog/src/main/java/org/apache/camel/catalog/DefaultCamelCatalog.java
+++ b/platforms/catalog/src/main/java/org/apache/camel/catalog/DefaultCamelCatalog.java
@@ -47,9 +47,12 @@ import static org.apache.camel.catalog.JSonSchemaHelper.getNames;
 import static org.apache.camel.catalog.JSonSchemaHelper.getPropertyDefaultValue;
 import static org.apache.camel.catalog.JSonSchemaHelper.getPropertyEnum;
 import static org.apache.camel.catalog.JSonSchemaHelper.getPropertyKind;
+import static org.apache.camel.catalog.JSonSchemaHelper.getPropertyNameFromNameWithPrefix;
+import static org.apache.camel.catalog.JSonSchemaHelper.getPropertyPrefix;
 import static org.apache.camel.catalog.JSonSchemaHelper.getRow;
 import static org.apache.camel.catalog.JSonSchemaHelper.isPropertyBoolean;
 import static org.apache.camel.catalog.JSonSchemaHelper.isPropertyInteger;
+import static org.apache.camel.catalog.JSonSchemaHelper.isPropertyMultiValue;
 import static org.apache.camel.catalog.JSonSchemaHelper.isPropertyNumber;
 import static org.apache.camel.catalog.JSonSchemaHelper.isPropertyObject;
 import static org.apache.camel.catalog.JSonSchemaHelper.isPropertyRequired;
@@ -752,13 +755,25 @@ public class DefaultCamelCatalog implements CamelCatalog {
 
         // validate all the options
         for (Map.Entry<String, String> property : properties.entrySet()) {
+            String value = property.getValue();
+
+            String originalName = property.getKey();
             String name = property.getKey();
             // the name may be using an optional prefix, so lets strip that because the options
             // in the schema are listed without the prefix
             name = stripOptionalPrefixFromName(rows, name);
-            String value = property.getValue();
+            // the name may be using a prefix, so lets see if we can find the real property name
+            String propertyName = getPropertyNameFromNameWithPrefix(rows, name);
+            if (propertyName != null) {
+                name = propertyName;
+            }
+
+            String prefix = getPropertyPrefix(rows, name);
+            String kind = getPropertyKind(rows, name);
             boolean placeholder = value.startsWith("{{") || value.startsWith("${") || value.startsWith("$simple{");
             boolean lookup = value.startsWith("#") && value.length() > 1;
+            // we cannot evaluate multi values as strict as the others, as we don't know their expected types
+            boolean mulitValue = prefix != null && originalName.startsWith(prefix) && isPropertyMultiValue(rows, name);
 
             Map<String, String> row = getRow(rows, name);
             if (row == null) {
@@ -786,7 +801,7 @@ public class DefaultCamelCatalog implements CamelCatalog {
                 // is enum but the value is not within the enum range
                 // but we can only check if the value is not a placeholder
                 String enums = getPropertyEnum(rows, name);
-                if (!placeholder && !lookup && enums != null) {
+                if (!mulitValue && !placeholder && !lookup && enums != null) {
                     String[] choices = enums.split(",");
                     boolean found = false;
                     for (String s : choices) {
@@ -801,9 +816,8 @@ public class DefaultCamelCatalog implements CamelCatalog {
                     }
                 }
 
-                // is reference lookup of bean (not applicable for @UriPath)
-                String kind = getPropertyKind(rows, name);
-                if (!"path".equals(kind) && isPropertyObject(rows, name)) {
+                // is reference lookup of bean (not applicable for @UriPath, or multi-valued)
+                if (!mulitValue && !"path".equals(kind) && isPropertyObject(rows, name)) {
                     // must start with # and be at least 2 characters
                     if (!value.startsWith("#") || value.length() <= 1) {
                         result.addInvalidReference(name, value);
@@ -811,7 +825,7 @@ public class DefaultCamelCatalog implements CamelCatalog {
                 }
 
                 // is boolean
-                if (!placeholder && !lookup && isPropertyBoolean(rows, name)) {
+                if (!mulitValue && !placeholder && !lookup && isPropertyBoolean(rows, name)) {
                     // value must be a boolean
                     boolean bool = "true".equalsIgnoreCase(value) || "false".equalsIgnoreCase(value);
                     if (!bool) {
@@ -820,7 +834,7 @@ public class DefaultCamelCatalog implements CamelCatalog {
                 }
 
                 // is integer
-                if (!placeholder && !lookup && isPropertyInteger(rows, name)) {
+                if (!mulitValue && !placeholder && !lookup && isPropertyInteger(rows, name)) {
                     // value must be an integer
                     boolean valid = validateInteger(value);
                     if (!valid) {
@@ -829,7 +843,7 @@ public class DefaultCamelCatalog implements CamelCatalog {
                 }
 
                 // is number
-                if (!placeholder && !lookup && isPropertyNumber(rows, name)) {
+                if (!mulitValue && !placeholder && !lookup && isPropertyNumber(rows, name)) {
                     // value must be an number
                     boolean valid = false;
                     try {

http://git-wip-us.apache.org/repos/asf/camel/blob/fc4bbc2e/platforms/catalog/src/main/java/org/apache/camel/catalog/JSonSchemaHelper.java
----------------------------------------------------------------------
diff --git a/platforms/catalog/src/main/java/org/apache/camel/catalog/JSonSchemaHelper.java b/platforms/catalog/src/main/java/org/apache/camel/catalog/JSonSchemaHelper.java
index 2293a7a..4e4624a 100644
--- a/platforms/catalog/src/main/java/org/apache/camel/catalog/JSonSchemaHelper.java
+++ b/platforms/catalog/src/main/java/org/apache/camel/catalog/JSonSchemaHelper.java
@@ -273,6 +273,58 @@ public final class JSonSchemaHelper {
         return null;
     }
 
+    public static String getPropertyPrefix(List<Map<String, String>> rows, String name) {
+        for (Map<String, String> row : rows) {
+            String prefix = null;
+            boolean found = false;
+            if (row.containsKey("name")) {
+                found = name.equals(row.get("name"));
+            }
+            if (row.containsKey("prefix")) {
+                prefix = row.get("prefix");
+            }
+            if (found) {
+                return prefix;
+            }
+        }
+        return null;
+    }
+
+    public static boolean isPropertyMultiValue(List<Map<String, String>> rows, String name) {
+        for (Map<String, String> row : rows) {
+            boolean multiValue = false;
+            boolean found = false;
+            if (row.containsKey("name")) {
+                found = name.equals(row.get("name"));
+            }
+            if (row.containsKey("multiValue")) {
+                multiValue = "true".equals(row.get("multiValue"));
+            }
+            if (found) {
+                return multiValue;
+            }
+        }
+        return false;
+    }
+
+    public static String getPropertyNameFromNameWithPrefix(List<Map<String, String>> rows, String name) {
+        for (Map<String, String> row : rows) {
+            String propertyName = null;
+            boolean found = false;
+            if (row.containsKey("name")) {
+                propertyName = row.get("name");
+            }
+            if (row.containsKey("prefix")) {
+                String preifx = row.get("prefix");
+                found = name.startsWith(preifx);
+            }
+            if (found) {
+                return propertyName;
+            }
+        }
+        return null;
+    }
+
     public static Map<String, String> getRow(List<Map<String, String>> rows, String key) {
         for (Map<String, String> row : rows) {
             if (key.equals(row.get("name"))) {

http://git-wip-us.apache.org/repos/asf/camel/blob/fc4bbc2e/platforms/catalog/src/test/java/org/apache/camel/catalog/CamelCatalogTest.java
----------------------------------------------------------------------
diff --git a/platforms/catalog/src/test/java/org/apache/camel/catalog/CamelCatalogTest.java b/platforms/catalog/src/test/java/org/apache/camel/catalog/CamelCatalogTest.java
index 0b8923f..28c8cef 100644
--- a/platforms/catalog/src/test/java/org/apache/camel/catalog/CamelCatalogTest.java
+++ b/platforms/catalog/src/test/java/org/apache/camel/catalog/CamelCatalogTest.java
@@ -480,6 +480,10 @@ public class CamelCatalogTest {
         // mixed optional without consumer. prefix
         result = catalog.validateEndpointProperties("file:inbox?delay=5000&consumer.greedy=true");
         assertTrue(result.isSuccess());
+
+        // prefix
+        result = catalog.validateEndpointProperties("file:inbox?delay=5000&scheduler.foo=123&scheduler.bar=456");
+        assertTrue(result.isSuccess());
     }
 
     @Test

http://git-wip-us.apache.org/repos/asf/camel/blob/fc4bbc2e/tooling/apt/src/main/java/org/apache/camel/tools/apt/EipAnnotationProcessor.java
----------------------------------------------------------------------
diff --git a/tooling/apt/src/main/java/org/apache/camel/tools/apt/EipAnnotationProcessor.java b/tooling/apt/src/main/java/org/apache/camel/tools/apt/EipAnnotationProcessor.java
index 294804c..eadb6fe 100644
--- a/tooling/apt/src/main/java/org/apache/camel/tools/apt/EipAnnotationProcessor.java
+++ b/tooling/apt/src/main/java/org/apache/camel/tools/apt/EipAnnotationProcessor.java
@@ -207,7 +207,7 @@ public class EipAnnotationProcessor extends AbstractAnnotationProcessor {
             String doc = entry.getDocumentation();
             doc = sanitizeDescription(doc, false);
             buffer.append(JsonSchemaHelper.toJson(entry.getName(), entry.getKind(), entry.isRequired(), entry.getType(), entry.getDefaultValue(), doc,
-                    entry.isDeprecated(), null, null, entry.isEnumType(), entry.getEnums(), entry.isOneOf(), entry.getOneOfTypes(), null));
+                    entry.isDeprecated(), null, null, entry.isEnumType(), entry.getEnums(), entry.isOneOf(), entry.getOneOfTypes(), null, null, false));
         }
         buffer.append("\n  }");
 

http://git-wip-us.apache.org/repos/asf/camel/blob/fc4bbc2e/tooling/apt/src/main/java/org/apache/camel/tools/apt/EndpointAnnotationProcessor.java
----------------------------------------------------------------------
diff --git a/tooling/apt/src/main/java/org/apache/camel/tools/apt/EndpointAnnotationProcessor.java b/tooling/apt/src/main/java/org/apache/camel/tools/apt/EndpointAnnotationProcessor.java
index 8658f90..00bd362 100644
--- a/tooling/apt/src/main/java/org/apache/camel/tools/apt/EndpointAnnotationProcessor.java
+++ b/tooling/apt/src/main/java/org/apache/camel/tools/apt/EndpointAnnotationProcessor.java
@@ -247,11 +247,14 @@ public class EndpointAnnotationProcessor extends AbstractAnnotationProcessor {
                 defaultValue = "false";
             }
 
-            // component options do not have optional prefix
+            // component options do not have prefix
             String optionalPrefix = "";
+            String prefix = "";
+            boolean multiValue = false;
 
             buffer.append(JsonSchemaHelper.toJson(entry.getName(), "property", required, entry.getType(), defaultValue, doc,
-                    entry.isDeprecated(), entry.getGroup(), entry.getLabel(), entry.isEnumType(), entry.getEnums(), false, null, optionalPrefix));
+                    entry.isDeprecated(), entry.getGroup(), entry.getLabel(), entry.isEnumType(), entry.getEnums(), false, null,
+                    optionalPrefix, prefix, multiValue));
         }
         buffer.append("\n  },");
 
@@ -295,11 +298,14 @@ public class EndpointAnnotationProcessor extends AbstractAnnotationProcessor {
                 defaultValue = "false";
             }
 
-            // @UriPath options do not have optional prefix
+            // @UriPath options do not have prefix
             String optionalPrefix = "";
+            String prefix = "";
+            boolean multiValue = false;
 
             buffer.append(JsonSchemaHelper.toJson(entry.getName(), "path", required, entry.getType(), defaultValue, doc,
-                    entry.isDeprecated(), entry.getGroup(), entry.getLabel(), entry.isEnumType(), entry.getEnums(), false, null, optionalPrefix));
+                    entry.isDeprecated(), entry.getGroup(), entry.getLabel(), entry.isEnumType(), entry.getEnums(), false, null,
+                    optionalPrefix, prefix, multiValue));
         }
 
         // sort the endpoint options in the standard order we prefer
@@ -339,9 +345,12 @@ public class EndpointAnnotationProcessor extends AbstractAnnotationProcessor {
                 defaultValue = "false";
             }
             String optionalPrefix = entry.getOptionalPrefix();
+            String prefix = entry.getPrefix();
+            boolean multiValue = entry.isMultiValue();
 
             buffer.append(JsonSchemaHelper.toJson(entry.getName(), "parameter", required, entry.getType(), defaultValue,
-                    doc, entry.isDeprecated(), entry.getGroup(), entry.getLabel(), entry.isEnumType(), entry.getEnums(), false, null, optionalPrefix));
+                    doc, entry.isDeprecated(), entry.getGroup(), entry.getLabel(), entry.isEnumType(), entry.getEnums(), false, null,
+                    optionalPrefix, prefix, multiValue));
         }
         buffer.append("\n  }");
 
@@ -662,7 +671,9 @@ public class EndpointAnnotationProcessor extends AbstractAnnotationProcessor {
                     }
                     name = prefix + name;
 
-                    String optionalPrefix = param.optionalPrefix();
+                    String paramOptionalPrefix = param.optionalPrefix();
+                    String paramPrefix = param.prefix();
+                    boolean multiValue = param.multiValue();
                     String defaultValue = param.defaultValue();
                     if (defaultValue == null && metadata != null) {
                         defaultValue = metadata.defaultValue();
@@ -727,7 +738,7 @@ public class EndpointAnnotationProcessor extends AbstractAnnotationProcessor {
 
                         String group = EndpointHelper.labelAsGroupName(label, componentModel.isConsumerOnly(), componentModel.isProducerOnly());
                         EndpointOption option = new EndpointOption(name, fieldTypeName, required, defaultValue, defaultValueNote,
-                                docComment.trim(), optionalPrefix, deprecated, group, label, isEnum, enums);
+                                docComment.trim(), paramOptionalPrefix, paramPrefix, multiValue, deprecated, group, label, isEnum, enums);
                         endpointOptions.add(option);
                     }
                 }

http://git-wip-us.apache.org/repos/asf/camel/blob/fc4bbc2e/tooling/apt/src/main/java/org/apache/camel/tools/apt/helper/JsonSchemaHelper.java
----------------------------------------------------------------------
diff --git a/tooling/apt/src/main/java/org/apache/camel/tools/apt/helper/JsonSchemaHelper.java b/tooling/apt/src/main/java/org/apache/camel/tools/apt/helper/JsonSchemaHelper.java
index 51cf907..21ba792 100644
--- a/tooling/apt/src/main/java/org/apache/camel/tools/apt/helper/JsonSchemaHelper.java
+++ b/tooling/apt/src/main/java/org/apache/camel/tools/apt/helper/JsonSchemaHelper.java
@@ -42,7 +42,7 @@ public final class JsonSchemaHelper {
 
     public static String toJson(String name, String kind, Boolean required, String type, String defaultValue, String description,
                                 Boolean deprecated, String group, String label, boolean enumType, Set<String> enums,
-                                boolean oneOfType, Set<String> oneOffTypes, String optionalPrefix) {
+                                boolean oneOfType, Set<String> oneOffTypes, String optionalPrefix, String prefix, boolean multiValue) {
         String typeName = JsonSchemaHelper.getType(type, enumType);
 
         StringBuilder sb = new StringBuilder();
@@ -102,6 +102,16 @@ public final class JsonSchemaHelper {
             sb.append(Strings.doubleQuote(text));
         }
 
+        if (!Strings.isNullOrEmpty(prefix)) {
+            sb.append(", \"prefix\": ");
+            String text = safeDefaultValue(prefix);
+            sb.append(Strings.doubleQuote(text));
+        }
+        if (multiValue) {
+            sb.append(", \"multiValue\": ");
+            sb.append(Strings.doubleQuote("true"));
+        }
+
         if (deprecated != null) {
             sb.append(", \"deprecated\": ");
             sb.append(Strings.doubleQuote(deprecated.toString()));

http://git-wip-us.apache.org/repos/asf/camel/blob/fc4bbc2e/tooling/apt/src/main/java/org/apache/camel/tools/apt/model/EndpointOption.java
----------------------------------------------------------------------
diff --git a/tooling/apt/src/main/java/org/apache/camel/tools/apt/model/EndpointOption.java b/tooling/apt/src/main/java/org/apache/camel/tools/apt/model/EndpointOption.java
index 3a367cf..7a45547 100644
--- a/tooling/apt/src/main/java/org/apache/camel/tools/apt/model/EndpointOption.java
+++ b/tooling/apt/src/main/java/org/apache/camel/tools/apt/model/EndpointOption.java
@@ -31,6 +31,8 @@ public final class EndpointOption {
     private String defaultValueNote;
     private String documentation;
     private String optionalPrefix;
+    private String prefix;
+    private boolean multiValue;
     private boolean deprecated;
     private String group;
     private String label;
@@ -38,7 +40,8 @@ public final class EndpointOption {
     private Set<String> enums;
 
     public EndpointOption(String name, String type, String required, String defaultValue, String defaultValueNote,
-                          String documentation, String optionalPrefix, boolean deprecated,  String group, String label,
+                          String documentation, String optionalPrefix, String prefix, boolean multiValue,
+                          boolean deprecated,  String group, String label,
                           boolean enumType, Set<String> enums) {
         this.name = name;
         this.type = type;
@@ -47,6 +50,8 @@ public final class EndpointOption {
         this.defaultValueNote = defaultValueNote;
         this.documentation = documentation;
         this.optionalPrefix = optionalPrefix;
+        this.prefix = prefix;
+        this.multiValue = multiValue;
         this.deprecated = deprecated;
         this.group = group;
         this.label = label;
@@ -78,6 +83,14 @@ public final class EndpointOption {
         return optionalPrefix;
     }
 
+    public String getPrefix() {
+        return prefix;
+    }
+
+    public boolean isMultiValue() {
+        return multiValue;
+    }
+
     public boolean isDeprecated() {
         return deprecated;
     }

http://git-wip-us.apache.org/repos/asf/camel/blob/fc4bbc2e/tooling/apt/src/test/java/org/apache/camel/tools/apt/EndpointOptionComparatorTest.java
----------------------------------------------------------------------
diff --git a/tooling/apt/src/test/java/org/apache/camel/tools/apt/EndpointOptionComparatorTest.java b/tooling/apt/src/test/java/org/apache/camel/tools/apt/EndpointOptionComparatorTest.java
index 3d4a4fe..660dc56 100644
--- a/tooling/apt/src/test/java/org/apache/camel/tools/apt/EndpointOptionComparatorTest.java
+++ b/tooling/apt/src/test/java/org/apache/camel/tools/apt/EndpointOptionComparatorTest.java
@@ -39,10 +39,10 @@ public class EndpointOptionComparatorTest {
         String group3 = EndpointHelper.labelAsGroupName(label3, false, false);
         String group4 = EndpointHelper.labelAsGroupName(label4, false, false);
 
-        EndpointOption op1 = new EndpointOption("first", "string", "true", "", "", "blah", null, false, group1, label1, false, null);
-        EndpointOption op2 = new EndpointOption("synchronous", "string", "true", "", "", "blah", null, false, group2, label2, false, null);
-        EndpointOption op3 = new EndpointOption("second", "string", "true", "", "", "blah", null, false, group3, label3, false, null);
-        EndpointOption op4 = new EndpointOption("country", "string", "true", "", "", "blah", null, false, group4, label4, false, null);
+        EndpointOption op1 = new EndpointOption("first", "string", "true", "", "", "blah", null, null, false, false, group1, label1, false, null);
+        EndpointOption op2 = new EndpointOption("synchronous", "string", "true", "", "", "blah", null, null, false, false, group2, label2, false, null);
+        EndpointOption op3 = new EndpointOption("second", "string", "true", "", "", "blah", null, null, false, false, group3, label3, false, null);
+        EndpointOption op4 = new EndpointOption("country", "string", "true", "", "", "blah", null, null, false, false, group4, label4, false, null);
 
         List<EndpointOption> list = new ArrayList<EndpointOption>();
         list.add(op1);

http://git-wip-us.apache.org/repos/asf/camel/blob/fc4bbc2e/tooling/spi-annotations/src/main/java/org/apache/camel/spi/UriParam.java
----------------------------------------------------------------------
diff --git a/tooling/spi-annotations/src/main/java/org/apache/camel/spi/UriParam.java b/tooling/spi-annotations/src/main/java/org/apache/camel/spi/UriParam.java
index ef45b2f..51760c3 100644
--- a/tooling/spi-annotations/src/main/java/org/apache/camel/spi/UriParam.java
+++ b/tooling/spi-annotations/src/main/java/org/apache/camel/spi/UriParam.java
@@ -85,6 +85,18 @@ public @interface UriParam {
     String javaType() default "";
 
     /**
+     * If the parameter can be configured multiple times, such as configuring options to a <tt>Map</tt> type.
+     */
+    boolean multiValue() default false;
+
+    /**
+     * If the parameter must be configured with a prefix.
+     * <p/>
+     * For example to configure scheduler options, the parameters is prefixed with <tt>scheduler.foo=bar</tt>
+     */
+    String prefix() default "";
+
+    /**
      * If the parameter can be configured with an optional prefix.
      * <p/>
      * For example to configure consumer options, the parameters can be prefixed with <tt>consumer.</tt>, eg <tt>consumer.delay=5000</tt>