Examples of org.apache.sling.api.resource.ModifiableValueMap

org.apache.sling.api.resource.ModifiableValueMap
The ModifiableValueMap is an extension of the {@link ValueMap} which allows to modify andpersist properties. All changes to this map are stored in the transient layer of the resource resolver or more precisely in the transient layer of the resource provider managing this resource.
Once {@link ResourceResolver#commit()} is called, thechanges are finally persisted.
The modifiable value map is only changeable through one of these methods
- {@link #put(String,Object)}
- {@link #putAll(java.util.Map)}
- {@link #remove(Object)}
The map is not modifiable through the collections provided by
- {@link #entrySet()}
- {@link #keySet()}
- {@link #values()}
And it can't be modified by these methods:
- {@link #clear()}
A modifiable value map should value {@link ResourceResolver#PROPERTY_RESOURCE_TYPE}to set the resource type of a resource.
A modifiable value map must not support deep writes. A call of a modification method with a path should result in an IllegalArgumentException. @since 2.2

        if (memberResource == null) {
            logger.error("vote: no memberResource found for slingId=" + slingId
                    + ", resource=" + getResource());
            return;
        }
        final ModifiableValueMap memberMap = memberResource.adaptTo(ModifiableValueMap.class);


        if (vote == null) {
            memberMap.remove("vote");
        } else {
            memberMap.put("vote", vote);
        }
        try {
            getResource().getResourceResolver().commit();
        } catch (PersistenceException e) {
            logger.error("vote: PersistenceException while voting: "+e, e);

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        props.clear();
        props.put(ResourceResolver.PROPERTY_RESOURCE_TYPE, SlingshotConstants.RESOURCETYPE_RATING);
        final Resource r = ResourceUtil.getOrCreateResource(resource.getResourceResolver(),
                ratingsResource.getPath() + "/" + userId, props, null, false);


        final ModifiableValueMap mv = r.adaptTo(ModifiableValueMap.class);
        mv.put(SlingshotConstants.PROPERTY_RATING, rating);


        r.getResourceResolver().commit();
    }

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    private void setupContent(final ResourceResolver resolver) throws PersistenceException {
        final Resource root = resolver.getResource(SlingshotConstants.APP_ROOT_PATH);
        if ( root != null ) {
            // fix resource type of root folder
            if ( !root.isResourceType(SlingshotConstants.RESOURCETYPE_HOME)) {
                final ModifiableValueMap mvm = root.adaptTo(ModifiableValueMap.class);
                mvm.put(ResourceResolver.PROPERTY_RESOURCE_TYPE, SlingshotConstants.RESOURCETYPE_HOME);
                resolver.commit();
            }
            final Resource publicResource = root.getChild("public");
            for(final String userName : USERS) {
                final String path = SlingshotConstants.APP_ROOT_PATH + "/public/" + userName;

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    }


    public void testPut()
    throws Exception {
        getSession().refresh(false);
        final ModifiableValueMap pvm = new JcrModifiableValueMap(this.rootNode, null);
        assertContains(pvm, initialSet());
        assertNull(pvm.get("something"));


        // now put two values and check set again
        pvm.put("something", "Another value");
        pvm.put("string", "overwrite");


        final Map<String, Object> currentlyStored = this.initialSet();
        currentlyStored.put("something", "Another value");
        currentlyStored.put("string", "overwrite");
        assertContains(pvm, currentlyStored);


        getSession().save();
        assertContains(pvm, currentlyStored);


        final ModifiableValueMap pvm2 = new JcrModifiableValueMap(this.rootNode, null);
        assertContains(pvm2, currentlyStored);
    }

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    }


    public void testSerializable()
    throws Exception {
        this.rootNode.getSession().refresh(false);
        final ModifiableValueMap pvm = new JcrModifiableValueMap(this.rootNode, null);
        assertContains(pvm, initialSet());
        assertNull(pvm.get("something"));


        // now put a serializable object
        final List<String> strings = new ArrayList<String>();
        strings.add("a");
        strings.add("b");
        pvm.put("something", strings);


        // check if we get the list again
        @SuppressWarnings("unchecked")
        final List<String> strings2 = (List<String>) pvm.get("something");
        assertEquals(strings, strings2);


        getSession().save();


        final ModifiableValueMap pvm2 = new JcrModifiableValueMap(this.rootNode, null);
        // check if we get the list again
        @SuppressWarnings("unchecked")
        final List<String> strings3 = (List<String>) pvm2.get("something", Serializable.class);
        assertEquals(strings, strings3);


    }

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    }


    public void testExceptions() throws Exception {
        this.rootNode.getSession().refresh(false);
        final ModifiableValueMap pvm = new JcrModifiableValueMap(this.rootNode, null);
        try {
            pvm.put(null, "something");
            fail("Put with null key");
        } catch (NullPointerException iae) {}
        try {
            pvm.put("something", null);
            fail("Put with null value");
        } catch (NullPointerException iae) {}
        try {
            pvm.put("something", pvm);
            fail("Put with non serializable");
        } catch (IllegalArgumentException iae) {}
    }

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    public void testMixins() throws Exception {
        this.rootNode.getSession().refresh(false);
        final Node testNode = this.rootNode.addNode("testMixins" + System.currentTimeMillis());
        testNode.getSession().save();
        final ModifiableValueMap pvm = new JcrModifiableValueMap(testNode, null);


        final String[] types = pvm.get("jcr:mixinTypes", String[].class);
        final Set<String> exNodeTypes = getMixinNodeTypes(testNode);


        assertEquals(exNodeTypes.size(), (types == null ? 0 : types.length));
        if ( types != null ) {
            for(final String name : types) {
                assertTrue(exNodeTypes.contains(name));
            }
            String[] newTypes = new String[types.length + 1];
            System.arraycopy(types, 0, newTypes, 0, types.length);
            newTypes[types.length] = "mix:referenceable";
            pvm.put("jcr:mixinTypes", newTypes);
        } else {
            pvm.put("jcr:mixinTypes", "mix:referenceable");
        }
        getSession().save();


        final Set<String> newNodeTypes = getMixinNodeTypes(testNode);
        assertEquals(newNodeTypes.size(), exNodeTypes.size() + 1);

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    public void testNamesReverse() throws Exception {
        this.rootNode.getSession().refresh(false);


        final Node testNode = this.rootNode.addNode("nameTest" + System.currentTimeMillis());
        testNode.getSession().save();
        final ModifiableValueMap pvm = new JcrModifiableValueMap(testNode, null);
        pvm.put(TEST_PATH, VALUE);
        pvm.put(PROP1, VALUE1);
        pvm.put(PROP2, VALUE2);
        pvm.put(PROP3, VALUE3);
        getSession().save();


        // read with property map
        final ValueMap vm = new JcrModifiableValueMap(testNode, null);
        assertEquals(VALUE, vm.get(TEST_PATH));

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        final Node testNode = this.rootNode.addNode("nameUpdateTest"
                + System.currentTimeMillis());
        testNode.setProperty(PROP3, VALUE);
        testNode.getSession().save();


        final ModifiableValueMap pvm = new JcrModifiableValueMap(testNode, null);
        pvm.put(PROP3, VALUE3);
        pvm.put("jcr:a:b", VALUE3);
        pvm.put("jcr:", VALUE3);
        getSession().save();


        // read with property map
        final ValueMap vm = new JcrModifiableValueMap(testNode, null);
        assertEquals(VALUE3, vm.get(PROP3));

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        final Node testNode = this.rootNode.addNode("dateConversionTest" + System.currentTimeMillis());
        testNode.setProperty(PROP1, calendarValue1);
        testNode.getSession().save();


        // write with property map
        final ModifiableValueMap pvm = new JcrModifiableValueMap(testNode, null);
        pvm.put(PROP2, dateValue2);
        pvm.put(PROP3, calendarValue3);
        getSession().save();


        // read with property map
        final ValueMap vm = new JcrModifiableValueMap(testNode, null);
        assertEquals(dateValue1, vm.get(PROP1, Date.class));

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