Revamp changelog
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# Changelog
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# PMD Release Notes
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## ????? - 5.5.3-SNAPSHOT
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**New Supported Languages:**
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The PMD team is pleased to announce PMD 5.5.3
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**Feature Requests and Improvements:**
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The most significant changes are on analysis performance and a whole new **Apex Security Rule Set**.
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* java
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* Type Resolution performance improved by ~15%
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Multithread performance has been enhanced by reducing thread-contention on a
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bunch of areas. This is still an area of work, as the speedup of running
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multithreaded analysis is still relatively small (4 threads produce less
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than a 50% speedup). Future releases will keep improving on this area.
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**New/Modified/Deprecated Rules:**
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Once again, *Symbol Table* has been an area of great performance improvements.
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This time we were able to further improve it's performance by roughly 10% on all
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supported languages. In *Java* in particular, several more improvements were possible,
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improving *Symbol Table* performance by a whooping 30%, that's over 5X faster
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than PMD 5.5.1, when we first started working on it.
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* apex
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* New Security ruleset including:
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* ApexBadCrypto
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* ApexCRUDViolation
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* ApexCSRF
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* ApexDangerousMethods
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* ApexInsecureEndpoint
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* ApexOpenRedirect
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* ApexSharingViolations
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* ApexSOQLInjection
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* ApexXSSFromEscapeFalse
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* ApexXSSFromURLParam
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Java developers will also appreciate the revamp of `CloneMethodMustImplementCloneable`,
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making it over 500X faster, and `PreserveStackTrace` which is now 7X faster.
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**Pull Requests:**
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### Table Of Contents
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* [#123](https://github.com/pmd/pmd/pull/123): \[apex] Changing method names to lowercase so casing doesn't matter
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* [#124](https://github.com/pmd/pmd/pull/124): \[java] CPD: Properly handle enums with `-ignore-identifiers`
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* [#126](https://github.com/pmd/pmd/pull/126): \[java] Avoid creating a new String to qualify types
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* [#127](https://github.com/pmd/pmd/pull/127): \[java] Don't look twice for the same variables
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* [#128](https://github.com/pmd/pmd/pull/128): \[java] Minor optimizations to type resolution
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* [#129](https://github.com/pmd/pmd/pull/129): \[plsql] Added correct parse of IS [NOT] NULL and multiline DML
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* [#130](https://github.com/pmd/pmd/pull/130); \[core] Reduce thread contention
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* [#133](https://github.com/pmd/pmd/pull/133): \[java] UnnecessaryFullyQualifiedName can detect conflicts
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* [#134](https://github.com/pmd/pmd/pull/134): \[java] Symbol table can now handle inner classes
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* [#135](https://github.com/pmd/pmd/pull/135): \[apex] New ruleset for Apex security
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* [#137](https://github.com/pmd/pmd/pull/137): \[apex] Adjusted remediation points
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* [#138](https://github.com/pmd/pmd/pull/138): \[java] Make ClasspathClassLoader parallel capable
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* [#140](https://github.com/pmd/pmd/pull/140): \[java] Make CloneMethodMustImplementCloneable over 500x faster
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* [#141](https://github.com/pmd/pmd/pull/141): \[java] Speedup PreserveStackTraceRule by over 7X
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* [#146](https://github.com/pmd/pmd/pull/146): \[apex] Detection of missing Apex CRUD checks for SOQL/DML operations
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* [#147](https://github.com/pmd/pmd/pull/147): \[apex] Adding XSS detection to return statements
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* [#148](https://github.com/pmd/pmd/pull/148): \[apex] Improving detection of SOQL injection
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* [#149](https://github.com/pmd/pmd/pull/149): \[apex] Whitelisting String.isEmpty and casting
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* [#152](https://github.com/pmd/pmd/pull/152): \[java] fixes #1552 continue does not require break
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* [#154](https://github.com/pmd/pmd/pull/154): \[java] Fix #1547: UnusedImports: Adjust regex to support underscores
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* [#158](https://github.com/pmd/pmd/pull/158): \[apex] Reducing FPs in SOQL with VF getter methods
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* [#160](https://github.com/pmd/pmd/pull/160): \[apex] Flagging of dangerous method call
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* [New and noteworthy](#New_and_noteworthy)
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* [Apex Security Rule Set](#Apex_Security_Rule_Set)
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* [Fixed Issues](#Fixed_Issues)
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* [API Changes](#API_Changes)
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* [External Contributions](#External_Contributions)
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**Bugfixes:**
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### New and noteworthy
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#### Apex Security Rule Set
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A new ruleset focused on security has been added, consisting of a wide range of rules
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to detect most common security problems.
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##### ApexBadCrypto
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The rule makes sure you are using randomly generated IVs and keys for `Crypto` calls.
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Hard-wiring these values greatly compromise the security of encrypted data.
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For instance, it would report violations on code such as:
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```
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public class without sharing Foo {
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Blob hardCodedIV = Blob.valueOf('Hardcoded IV 123');
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Blob key = Crypto.generateAesKey(128);
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Blob data = Blob.valueOf('Data to be encrypted');
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Blob encrypted = Crypto.encrypt('AES128', key, hardCodedIV, data);
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}
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```
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##### ApexCRUDViolation
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The rule validates you are checking for access permissions before a SOQL/SOSL/DML operation.
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Not having proper permissions will produce runtime errors. This check forces you to handle
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such scenarios.
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For example, the following code is considered valid:
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```
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public class Foo {
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public Contact foo(String status, String ID) {
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Contact c = [SELECT Status__c FROM Contact WHERE Id=:ID];
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// Make sure we can update the database before even trying
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if (!Schema.sObjectType.Contact.fields.Name.isUpdateable()) {
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return null;
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}
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c.Status__c = status;
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update c;
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return c;
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}
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}
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```
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##### ApexCSRF
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Check to avoid making DML operations in Apex class constructor/init method. This prevents
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modification of the database just by accessing a page.
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For instance, the following code would be invalid:
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```
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public class Foo {
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public init() {
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insert data;
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}
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public Foo() {
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insert data;
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}
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}
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```
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##### ApexDangerousMethods
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Checks against calling dangerous methods. For the time being, it only reports against
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`FinancialForce`'s `Configuration.disableTriggerCRUDSecurity()`. Disabling CRUD security
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opens the door to several attacks and requires manual validation, which is unreliable.
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##### ApexInsecureEndpoint
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Checks against accessing endpoints under plain **http**. You should always use
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**https** for security.
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##### ApexOpenRedirect
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Checks against redirects to user-controlled locations. This prevents attackers from
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redirecting users to phishing sites.
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For instance, the following code would be reported:
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```
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public class without sharing Foo {
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String unsafeLocation = ApexPage.getCurrentPage().getParameters.get('url_param');
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PageReference page() {
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return new PageReference(unsafeLocation);
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}
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}
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```
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##### ApexSharingViolations
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Detect classes declared with no explicit sharing mode if DML methods are used. This
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forces the developer to take access restrictions into account before modifying objects.
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##### ApexSOQLInjection
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Detects the usage of untrusted / unescaped variables in DML queries.
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For instance, it would report on:
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```
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public class Foo {
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public void test1(String t1) {
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Database.query('SELECT Id FROM Account' + t1);
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}
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}
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```
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##### ApexXSSFromEscapeFalse
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Reports on calls to `addError` disabling escaping. The message passed to `addError`
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will be displayed directly to the user in the UI, making it prime ground for XSS
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attacks if unescaped.
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##### ApexXSSFromURLParam
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Makes sure that all values obtained from URL parameters are properly escaped / sanitized
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to avoid XSS attacks.
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### Fixed Issues
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* General
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* [#1542](https://sourceforge.net/p/pmd/bugs/1542/): \[java] CPD throws an NPE when parsing enums with -ignore-identifiers
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@@ -71,4 +175,23 @@
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* [#1549](https://sourceforge.net/p/pmd/bugs/1549/): \[plsql] Parse error for IS [NOT] NULL construct
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**API Changes:**
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### API Changes
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* `net.sourceforge.pmd.RuleSetFactory` is now immutable and its behavior cannot be changed anymore.
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It provides constructors to create new adjusted instances. This allows to avoid synchronization in RuleSetFactory.
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See [PR #131](https://github.com/pmd/pmd/pull/131).
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### External Contributions
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* [#123](https://github.com/pmd/pmd/pull/123): \[apex] Changing method names to lowercase so casing doesn't matter
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* [#129](https://github.com/pmd/pmd/pull/129): \[plsql] Added correct parse of IS [NOT] NULL and multiline DML
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* [#137](https://github.com/pmd/pmd/pull/137): \[apex] Adjusted remediation points
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* [#146](https://github.com/pmd/pmd/pull/146): \[apex] Detection of missing Apex CRUD checks for SOQL/DML operations
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* [#147](https://github.com/pmd/pmd/pull/147): \[apex] Adding XSS detection to return statements
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* [#148](https://github.com/pmd/pmd/pull/148): \[apex] Improving detection of SOQL injection
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* [#149](https://github.com/pmd/pmd/pull/149): \[apex] Whitelisting String.isEmpty and casting
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* [#152](https://github.com/pmd/pmd/pull/152): \[java] fixes #1552 continue does not require break
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* [#154](https://github.com/pmd/pmd/pull/154): \[java] Fix #1547: UnusedImports: Adjust regex to support underscores
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* [#158](https://github.com/pmd/pmd/pull/158): \[apex] Reducing FPs in SOQL with VF getter methods
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* [#160](https://github.com/pmd/pmd/pull/160): \[apex] Flagging of dangerous method call
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