SPSDescriptor.java
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org.apache.derby.iapi.sql.dictionary |
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Apache Derby |
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| Metric | Description | |
|---|---|---|
| COMMENTS | Comment lines |  |
| JAVA0143 | JAVA0143 Synchronized method | |
| DOC_COMMENT | Number of javadoc comment lines | |
| DECL_COMMENTS | Comments in declarations | |
| LINE_COMMENT | Number of line comments | |
| LINES | Number of lines in the source file | |
| EXEC_COMMENTS | Comments in executable code | |
| SIZE | Size of the file in bytes | |
| CYCLOMATIC | Cyclomatic complexity | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| RETURNS | Number of return points from functions | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| LOC | Lines of code | |
| ELOC | Effective lines of code | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| PARAMS | Number of formal parameter declarations | |
| FUNCTIONS | Number of function declarations | |
| UNIQUE_OPERANDS | Number of unique operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| BLOCK_COMMENT | Number of block comment lines | |
| EXITS | Procedure exits | |
| PROGRAM_LENGTH | Halstead program length | |
| OPERATORS | Number of operators | |
| OPERANDS | Number of operands | |
| JAVA0081 | JAVA0081 Boolean literal in comparison | |
| BLOCKS | Number of blocks | |
| LOGICAL_LINES | Number of statements | |
| JAVA0171 | JAVA0171 Unused local variable | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| JAVA0067 | JAVA0067 Array descriptor on identifier name | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| NEST_DEPTH | Maximum nesting depth | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0259 | JAVA0259 Return of collection/array field | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0138 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| LOOPS | Number of loops | |
| JAVA0068 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0256 | JAVA0256 Assignment of external collection/array to field | |
/*
Derby - Class org.apache.derby.iapi.sql.dictionary.SPSDescriptor
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to you under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package org.apache.derby.iapi.sql.dictionary;
import java.sql.Timestamp;
import java.util.Enumeration;
import java.util.Vector;
import org.apache.derby.catalog.Dependable;
import org.apache.derby.catalog.DependableFinder;
import org.apache.derby.catalog.UUID;
import org.apache.derby.iapi.error.StandardException;
import org.apache.derby.iapi.reference.SQLState;
import org.apache.derby.iapi.services.context.ContextManager;
import org.apache.derby.iapi.services.context.ContextService;
import org.apache.derby.iapi.services.io.StoredFormatIds;
import org.apache.derby.iapi.services.monitor.Monitor;
import org.apache.derby.iapi.services.sanity.SanityManager;
import org.apache.derby.iapi.services.uuid.UUIDFactory;
import org.apache.derby.iapi.sql.Statement;
import org.apache.derby.iapi.sql.StorablePreparedStatement;
import org.apache.derby.iapi.sql.conn.LanguageConnectionContext;
import org.apache.derby.iapi.sql.conn.LanguageConnectionFactory;
import org.apache.derby.iapi.sql.depend.DependencyManager;
import org.apache.derby.iapi.sql.depend.Dependent;
import org.apache.derby.iapi.sql.depend.Provider;
import org.apache.derby.iapi.sql.depend.ProviderInfo;
import org.apache.derby.iapi.sql.execute.ExecPreparedStatement;
import org.apache.derby.iapi.store.access.TransactionController;
import org.apache.derby.iapi.types.DataTypeDescriptor;
/**
* A SPSDescriptor describes a Stored Prepared Statement.
* It correlates to a row in SYS.SYSSTATEMENTS.
*
* <B>SYNCHRONIZATION</B>: Stored prepared statements
* may be cached. Thus they may be shared by multiple
* threads. It is very hard for two threads to try
* to muck with an sps simultaeously because all ddl
* (including sps recompilation) clears out the sps
* cache and invalidates whatever statement held a
* cached sps. But it is possible for two statements
* to do a prepare execute statment <x> at the exact
* same time, so both try to do an sps.prepare() at the
* same time during code generation, so we synchronize
* most everything except getters on immutable objects
* just to be on the safe side.
*
*
*/
public class SPSDescriptor extends TupleDescriptor
implements UniqueSQLObjectDescriptor, Dependent, Provider
{
/**
* Statement types.
* <UL>
* <LI> SPS_TYPE_TRIGGER - trigger (<B>NOT IMPLEMENTED</B>) </LI>
* <LI> SPS_TYPE_EXPLAIN - explain (<B>NOT IMPLEMENTED</B>) </LI>
* <LI> SPS_TYPE_REGULAR - catchall</LI>
* </UL>
*/
public static final char SPS_TYPE_TRIGGER = 'T';
public static final char SPS_TYPE_REGULAR = 'S';
public static final char SPS_TYPE_EXPLAIN = 'X';
/**
interface to this class is:
<ol>
<li>public void prepare() throws StandardException;
<li>public void prepareAndRelease(LanguageConnectionContext lcc)
throws StandardException;
<li>public void prepareAndRelease(...);
<li>public String getQualifiedName();
<li>public char getType();
<li>public String getTypeAsString();
<li>public boolean isValid();
<li>public boolean initiallyCompilable();
<li>public java.sql.Timestamp getCompileTime();
<li>public void setCompileTime();
<li>public String getText();
<li>public String getUsingText();
<li>public void setUsingText(String usingText);
<li>public void setUUID(UUID uuid);
<li>public DataTypeDescriptor[] getParams() throws StandardException;
<li>public void setParams(DataTypeDescriptor[] params);
<li>Object[] getParameterDefaults() throws StandardException;
<li>void setParameterDefaults(Object[] values);
<li>public UUID getCompSchemaId();
<li>public ExecPreparedStatement getPreparedStatement()
throws StandardException;
<li>public ExecPreparedStatement getPreparedStatement(boolean recompIfInvalid)
throws StandardException;
<li>public void revalidate(LanguageConnectionContext lcc)
throws StandardException;
</ol>
*/
private static final int RECOMPILE = 1;
private static final int INVALIDATE = 0;
// Class contents
private SchemaDescriptor sd;
private String name;
private UUID uuid;
private UUID compSchemaId;
private char type;
private boolean valid;
private String text;
private String usingText;
private ExecPreparedStatement preparedStatement;
private DataTypeDescriptor params[];
private Timestamp compileTime;
/**
* Old code - never used.
*/
private Object paramDefaults[];
private boolean initiallyCompilable;
private boolean lookedUpParams;
private UUIDFactory uuidFactory;
// constructors
/**
* Constructor for a SPS Descriptor
*
* @param dataDictionary The data dictionary that this descriptor lives in
* @param name the SPS name
* @param uuid the UUID
* @param suuid the schema UUID
* @param compSchemaUUID the schema UUID at compilation time
* @param type type
* @param valid is the sps valid
* @param text the text for this statement
* @param initiallyCompilable is the statement initially compilable?
*
* @exception StandardException on error
*/
public SPSDescriptor
(DataDictionary dataDictionary,
String name,
UUID uuid,
UUID suuid,
UUID compSchemaUUID,
char type,
boolean valid,
String text,
boolean initiallyCompilable ) throws StandardException
{
this( dataDictionary, name, uuid, suuid, compSchemaUUID,
type, valid, text, (String) null, null, null, initiallyCompilable );
}
/**
* Constructor for a SPS Descriptor. Used when
* constructing an SPS descriptor from a row
* in SYSSTATEMENTS.
*
* @param dataDictionary The data dictionary that this descriptor lives in
* @param name the SPS name
* @param uuid the UUID
* @param suuid the schema UUID
* @param compSchemaUUID the schema UUID at compilation time
* @param type type
* @param valid is the sps valid
* @param text the text for this statement
* @param usingText the text for the USING clause supplied to
* CREATE or ALTER STATEMENT
* @param compileTime the time this was compiled
* @param preparedStatement the PreparedStatement
* @param initiallyCompilable is the statement initially compilable?
*
* @exception StandardException on error
*/
public SPSDescriptor
(DataDictionary dataDictionary,
String name,
UUID uuid,
UUID suuid,
UUID compSchemaUUID,
char type,
boolean valid,
String text,
String usingText,
Timestamp compileTime,
ExecPreparedStatement preparedStatement,
boolean initiallyCompilable ) throws StandardException
{
super( dataDictionary );
this.name = name;
this.uuid = uuid;
this.type = type;
this.text = text;
this.usingText = usingText;
this.valid = valid;
this.compileTime = compileTime;
this.sd = dataDictionary.getSchemaDescriptor(suuid, null);
this.preparedStatement = preparedStatement;
this.compSchemaId = compSchemaUUID;
this.initiallyCompilable = initiallyCompilable;
}
/**
* FOR TRIGGERS ONLY
* <p>
* Generate the class for this SPS and immediately
* release it. This is useful for cases where we
* don't want to immediately execute the statement
* corresponding to this sps (e.g. CREATE STATEMENT).
* <p>
* <I>SIDE EFFECTS</I>: will update and SYSDEPENDS
* with the prepared statement dependency info.
*
* @param lcc the language connection context
* @param triggerTable the table descriptor to bind against. Had
* better be null if this isn't a trigger sps.
* @param tc the transaction controller
*
* @exception StandardException on error
*/
public final synchronized void prepareAndRelease
(
LanguageConnectionContext lcc,
TableDescriptor triggerTable,
TransactionController tc
) throws StandardException
{
if (SanityManager.DEBUG)
{
if (triggerTable != null)
{
SanityManager.ASSERT(type == SPS_TYPE_TRIGGER, "only expect a table descriptor when we have a trigger");
}
}
compileStatement(lcc, triggerTable, tc);
preparedStatement.makeInvalid(DependencyManager.PREPARED_STATEMENT_RELEASE, lcc);
}
/**
* FOR TRIGGERS ONLY
* <p>
* Generate the class for this SPS and immediately
* release it. This is useful for cases where we
* don't want to immediately execute the statement
* corresponding to this sps (e.g. CREATE STATEMENT).
* <p>
* <I>SIDE EFFECTS</I>: will update and SYSDEPENDS
* with the prepared statement dependency info.
*
* @param lcc the language connection context
* @param triggerTable the table descriptor to bind against. Had
* better be null if this isn't a trigger sps.
*
* @exception StandardException on error
*/
public final synchronized void prepareAndRelease
(
LanguageConnectionContext lcc,
TableDescriptor triggerTable
) throws StandardException
{
prepareAndRelease(lcc, triggerTable, (TransactionController)null);
}
/**
* Generate the class for this SPS and immediately
* release it. This is useful for cases where we
* don't want to immediately execute the statement
* corresponding to this sps (e.g. CREATE STATEMENT).
* <p>
* <I>SIDE EFFECTS</I>: will update and SYSDEPENDS
* with the prepared statement dependency info.
*
* @param lcc the language connection context
*
* @exception StandardException on error
*/
public final synchronized void prepareAndRelease(LanguageConnectionContext lcc) throws StandardException
{
prepareAndRelease(lcc, (TableDescriptor)null, (TransactionController)null);
}
private void compileStatement
(
LanguageConnectionContext lcc,
TableDescriptor triggerTable,
TransactionController tc
)
throws StandardException
{
ContextManager cm = lcc.getContextManager();
DependencyManager dm;
ProviderInfo[] providerInfo;
LanguageConnectionFactory lcf = lcc.getLanguageConnectionFactory();
DataDictionary dd = getDataDictionary();
/*
** If we are a trigger, then we have to go ahead
** and locate the trigger's table descriptor and
** push it on the lcc. This is expensive, but
** pretty atypical since trigger actions aren't
** likely to be invalidated too often. Also, when
** possible, we already have the triggerTable.
*/
if (type == SPS_TYPE_TRIGGER && triggerTable == null)
{
String uuidStr = name.substring(49);
triggerTable = dd.getTableDescriptor(recreateUUID(uuidStr));
if (SanityManager.DEBUG)
{
if (triggerTable == null)
{
SanityManager.THROWASSERT("couldn't find trigger table for trigger sps "+name);
}
}
}
if (triggerTable != null)
{
lcc.pushTriggerTable(triggerTable);
}
// stored statements always stored as unicode.
Statement stmt = lcf.getStatement(dd.getSchemaDescriptor(compSchemaId, null), text, true);
try
{
preparedStatement = (ExecPreparedStatement) stmt.prepareStorable(
lcc,
preparedStatement,
getParameterDefaults(),
getSchemaDescriptor(),
type == SPS_TYPE_TRIGGER);
}
finally
{
if (triggerTable != null)
{
lcc.popTriggerTable(triggerTable);
}
}
//If this references a SESSION schema table (temporary or permanent), then throw an exception
//This is if EXECUTE STATEMENT executing a statement that was created with NOCOMPILE. Because
//of NOCOMPILE, we could not catch SESSION schema table reference by the statement at
//CREATE STATEMENT time. And hence need to catch such statements at EXECUTE STATEMENT time
//when the query is getting compiled.
if (preparedStatement.referencesSessionSchema())
throw StandardException.newException(SQLState.LANG_OPERATION_NOT_ALLOWED_ON_SESSION_SCHEMA_TABLES);
setCompileTime();
setParams(preparedStatement.getParameterTypes());
if (!((org.apache.derby.impl.sql.catalog.DataDictionaryImpl) dd).readOnlyUpgrade) {
/*
** Indicate that we are going to write the data
** dictionary. We have probably already done this
** but it is ok to call startWriting more than once.
*/
dd.startWriting(lcc);
dm = dd.getDependencyManager();
/*
** Clear out all the dependencies that exist
** before we recreate them so we don't grow
** SYS.SYSDEPENDS forever.
*/
dm.clearDependencies(lcc, this, tc);
/*
** Copy over all the dependencies to me
*/
dm.copyDependencies(preparedStatement, // from
this, // to
false, // persistent only
cm,
tc);
}
// mark it as valid
valid = true;
}
/**
* Gets the name of the sps.
*
* @return A String containing the name of the statement.
*/
public final String getName()
{
return name;
}
/**
* Gets the full, qualified name of the statement.
*
* @return A String containing the name of the statement.
*/
public final String getQualifiedName()
{
return sd.getSchemaName() + "." + name;
}
/**
* Gets the SchemaDescriptor for this SPS Descriptor.
*
* @return SchemaDescriptor The SchemaDescriptor.
*/
public final SchemaDescriptor getSchemaDescriptor()
{
return sd;
}
/**
* Gets an identifier telling what type of table this is.
* Types match final ints in this interface. Currently
* returns SPS_TYPE_REGULAR or SPS_TYPE_TRIGGER.
*
* @return An identifier telling what type of statement
* we are.
*/
public final char getType()
{
return type;
}
/**
* Simple little helper function to convert your type
* to a string, which is easier to use.
*
* @return type as a string
*/
public final String getTypeAsString()
{
char[] charArray = new char[1];
charArray[0] = type;
return new String(charArray);
}
/**
* Is the statement initially compilable?
*
* @return false if statement was created with the NOCOMPILE flag
* true otherwise
*/
public boolean initiallyCompilable() { return initiallyCompilable; }
/**
* Validate the type. <B>NOTE</B>: Only SPS_TYPE_REGULAR
* and SPS_TYPE_TRIGGER are currently valid.
*
* @param type the type
*
* @return true/false
*/
public final static boolean validType(char type)
{
return (type == SPSDescriptor.SPS_TYPE_REGULAR) ||
(type == SPSDescriptor.SPS_TYPE_TRIGGER);
}
/**
* The time this prepared statement was compiled
*
* @return the time this class was last compiled
*/
public final synchronized Timestamp getCompileTime()
{
return compileTime;
}
/**
* Set the compile time to now
*
*/
public final synchronized void setCompileTime()
{
compileTime = new Timestamp(System.currentTimeMillis());
}
/**
* Get the text used to create this statement.
* Returns original text in a cleartext string.
*
* @return The text
*/
public final String getText()
{
return text;
}
/**
* Get the text of the USING clause used on CREATE
* or ALTER statement.
*
* @return The text
*/
public final synchronized String getUsingText()
{
return usingText;
}
/**
* Sets the UUID of the SPS.
*
* @param uuid The UUID of the SPS to be set in the descriptor
*/
public final synchronized void setUUID(UUID uuid)
{
this.uuid = uuid;
}
/**
* Gets the UUID of the SPS.
*
* @return the uuid
*/
public final UUID getUUID()
{
return uuid;
}
/**
* Get the array of date type descriptors for
* this statement. Currently, we do a lookup
* if we don't already have the parameters saved.
* When SPSes are cached, the parameters should
* be set up when the sps is constructed.
*
* @return the array of data type descriptors
*
* @exception StandardException on error
*/
public final synchronized DataTypeDescriptor[] getParams()
throws StandardException
{
if (params == null && !lookedUpParams)
{
Vector v = new Vector();
params = getDataDictionary().getSPSParams(this, v);
paramDefaults = new Object[v.size()];
Enumeration iterator = v.elements();
for (int i = 0; iterator.hasMoreElements(); i++)
{
paramDefaults[i] = iterator.nextElement();
}
lookedUpParams = true;
}
return params;
}
/**
* Set the list of parameters for this statement
*
* @param params the parameter list
*/
public final synchronized void setParams(DataTypeDescriptor params[])
{
this.params = params;
}
/**
* Get the default parameter values for this
* statement. Default parameter values are
* supplied by a USING clause on either a
* CREATE or ALTER STATEMENT statement.
*
* @return the default parameter values
*
* @exception StandardException on error
*/
public final synchronized Object[] getParameterDefaults()
throws StandardException
{
if (paramDefaults == null)
getParams();
return paramDefaults;
}
/**
* Set the parameter defaults for this statement.
*
* @param values the parameter defaults
*/
public final synchronized void setParameterDefaults(Object[] values)
{
this.paramDefaults = values;
}
/**
* Get the constant action for this statement
*
* @return the constant action
*/
//public final synchronized ConstantAction getConstantAction()
//{
// return preparedStatement.getConstantAction();
//}
/**
* Get the preparedStatement for this statement.
* If stmt is invalid or hasn't been compiled yet,
* it will be recompiled.
*
* @return the preparedStatement
*
* @exception StandardException on error
*/
public final ExecPreparedStatement getPreparedStatement()
throws StandardException
{
return getPreparedStatement(true);
}
/**
* Get the preparedStatement for this statement.
* Expects the prepared statement to have already
* been added to SYS.SYSSTATEMENTS.
* <p>
* Side Effects: will update SYS.SYSSTATEMENTS with
* the new plan if it needs to be recompiled.
*
* @param recompIfInvalid if false, never recompile even
* if statement is invalid
*
* @return the preparedStatement
*
* @exception StandardException on error
*/
public final synchronized ExecPreparedStatement getPreparedStatement(boolean recompIfInvalid)
throws StandardException
{
//System.out.println("preparedStatement = " + preparedStatement);
/*
** Recompile if we are invalid, we don't have
** a prepared statement, or the statements activation
** has been cleared and cannot be reconstituted.
*/
if (recompIfInvalid &&
(!valid ||
(preparedStatement == null)))
{
ContextManager cm = ContextService.getFactory().getCurrentContextManager();
/*
** Find the language connection context. Get
** it each time in case a connection is dropped.
*/
LanguageConnectionContext lcc = (LanguageConnectionContext)
cm.getContext(LanguageConnectionContext.CONTEXT_ID);
if (!((org.apache.derby.impl.sql.catalog.DataDictionaryImpl) (lcc.getDataDictionary())).readOnlyUpgrade) {
//bug 4821 - First try compiling on a nested transaction so we can release
//the locks after the compilation. But if we get lock time out on the
//nested transaction, then go ahead and do the compilation on the user
//transaction. When doing the compilation on user transaction, the locks
//acquired for recompilation will be released at the end of the user transaction.
TransactionController nestedTC;
try
{
nestedTC = lcc.getTransactionCompile().startNestedUserTransaction(false);
}
catch (StandardException se)
{
// If I cannot start a Nested User Transaction use the parent
// transaction to do all the work.
nestedTC = null;
}
// DERBY-2584: If the first attempt to compile the query fails,
// we need to reset initiallyCompilable to make sure the
// prepared plan is fully stored to disk. Save the initial
// value here.
final boolean compilable = initiallyCompilable;
try
{
prepareAndRelease(lcc, null, nestedTC);
updateSYSSTATEMENTS(lcc, RECOMPILE, nestedTC);
}
catch (StandardException se)
{
if (se.getMessageId().equals(SQLState.LOCK_TIMEOUT))
{
if (nestedTC != null)
{
nestedTC.commit();
nestedTC.destroy();
nestedTC = null;
}
// if we couldn't do this with a nested xaction, retry with
// parent-- we need to wait this time!
initiallyCompilable = compilable;
prepareAndRelease(lcc, null, null);
updateSYSSTATEMENTS(lcc, RECOMPILE, null);
}
else throw se;
}
finally
{
// no matter what, commit the nested transaction; if something
// bad happened in the child xaction lets not abort the parent
// here.
if (nestedTC != null)
{
nestedTC.commit();
nestedTC.destroy();
}
}
}
}
return preparedStatement;
}
/**
* Get the compilation type schema id when this view
* was first bound.
*
* @return the schema UUID
*/
public final UUID getCompSchemaId()
{
return compSchemaId;
}
/**
* Prints the contents of the TableDescriptor
*
* @return The contents as a String
*/
public final String toString()
{
if (SanityManager.DEBUG)
{
return "SPSDescriptor:\n"+
"\tname: "+sd.getSchemaName()+"."+name+"\n"+
"\tuuid: "+uuid+"\n"+
"\ttext: "+text+"\n"+
"\tvalid: "+((valid) ? "TRUE" : "FALSE")+"\n" +
"\tpreparedStatement: "+preparedStatement+"\n";
}
else
{
return "";
}
}
//////////////////////////////////////////////////////
//
// PROVIDER INTERFACE
//
//////////////////////////////////////////////////////
/**
* Return the stored form of this provider
*
* @see Dependable#getDependableFinder
*/
public final DependableFinder getDependableFinder()
{
return getDependableFinder(StoredFormatIds.SPS_DESCRIPTOR_FINDER_V01_ID);
}
/**
* Return the name of this Provider. (Useful for errors.)
*
* @return String The name of this provider.
*/
public final String getObjectName()
{
return name;
}
/**
* Get the provider's UUID
*
* @return String The provider's UUID
*/
public final UUID getObjectID()
{
return uuid;
}
/**
* Get the provider's type.
*
* @return String The provider's type.
*/
public final String getClassType()
{
return Dependable.STORED_PREPARED_STATEMENT;
}
//////////////////////////////////////////////////////
//
// DEPENDENT INTERFACE
//
//////////////////////////////////////////////////////
/**
* Check that all of the dependent's dependencies are valid.
*
* @return true if the dependent is currently valid
*/
public final synchronized boolean isValid()
{
return valid;
}
/**
* Prepare to mark the dependent as invalid (due to at least one of
* its dependencies being invalid).
*
* @param action The action causing the invalidation
* @param p the provider
*
* @exception StandardException thrown if unable to make it invalid
*/
public final synchronized void prepareToInvalidate(
Provider p, int action,
LanguageConnectionContext lcc)
throws StandardException
{
switch (action)
{
/*
** Things that don't affect us
*/
case DependencyManager.CREATE_VIEW:
/*
** Things that force a recompile, but are
** allowed.
*/
case DependencyManager.CREATE_INDEX:
case DependencyManager.CREATE_CONSTRAINT:
case DependencyManager.DROP_CONSTRAINT:
case DependencyManager.DROP_INDEX:
case DependencyManager.DROP_TABLE:
case DependencyManager.DROP_VIEW:
case DependencyManager.DROP_METHOD_ALIAS:
case DependencyManager.DROP_SYNONYM:
case DependencyManager.ALTER_TABLE:
case DependencyManager.RENAME:
case DependencyManager.RENAME_INDEX:
case DependencyManager.PREPARED_STATEMENT_RELEASE:
case DependencyManager.USER_RECOMPILE_REQUEST:
case DependencyManager.CHANGED_CURSOR:
case DependencyManager.BULK_INSERT:
case DependencyManager.COMPRESS_TABLE:
case DependencyManager.SET_CONSTRAINTS_ENABLE:
case DependencyManager.SET_CONSTRAINTS_DISABLE:
case DependencyManager.SET_TRIGGERS_ENABLE:
case DependencyManager.SET_TRIGGERS_DISABLE:
case DependencyManager.ROLLBACK:
case DependencyManager.INTERNAL_RECOMPILE_REQUEST:
case DependencyManager.CREATE_TRIGGER:
case DependencyManager.DROP_TRIGGER:
case DependencyManager.DROP_COLUMN:
case DependencyManager.DROP_COLUMN_RESTRICT:
case DependencyManager.UPDATE_STATISTICS:
case DependencyManager.DROP_STATISTICS:
case DependencyManager.TRUNCATE_TABLE:
break;
/*
** The rest are errors
*/
default:
DependencyManager dm;
dm = getDataDictionary().getDependencyManager();
throw StandardException.newException(SQLState.LANG_PROVIDER_HAS_DEPENDENT_S_P_S,
dm.getActionString(action),
p.getObjectName(), name);
}
}
/**
* Mark the dependent as invalid (due to at least one of
* its dependencies being invalid).
*
* @param action The action causing the invalidation
*
* @exception StandardException thrown if unable to make it invalid
*/
public final synchronized void makeInvalid(int action,
LanguageConnectionContext lcc)
throws StandardException
{
DependencyManager dm;
dm = getDataDictionary().getDependencyManager();
switch (action)
{
/*
** Some things that don't affect stored prepared
** statements.
*/
case DependencyManager.PREPARED_STATEMENT_RELEASE:
case DependencyManager.CREATE_VIEW:
break;
/*
** Things that can invalidate a stored
** prepared statement.
*/
case DependencyManager.CREATE_INDEX:
case DependencyManager.CREATE_CONSTRAINT:
case DependencyManager.DROP_CONSTRAINT:
case DependencyManager.DROP_TABLE:
case DependencyManager.DROP_INDEX:
case DependencyManager.DROP_VIEW:
case DependencyManager.DROP_METHOD_ALIAS:
case DependencyManager.DROP_SYNONYM:
case DependencyManager.ALTER_TABLE:
case DependencyManager.RENAME:
case DependencyManager.RENAME_INDEX:
case DependencyManager.USER_RECOMPILE_REQUEST:
case DependencyManager.CHANGED_CURSOR:
case DependencyManager.BULK_INSERT:
case DependencyManager.COMPRESS_TABLE:
case DependencyManager.SET_CONSTRAINTS_ENABLE:
case DependencyManager.SET_CONSTRAINTS_DISABLE:
case DependencyManager.SET_TRIGGERS_ENABLE:
case DependencyManager.SET_TRIGGERS_DISABLE:
case DependencyManager.ROLLBACK:
case DependencyManager.INTERNAL_RECOMPILE_REQUEST:
case DependencyManager.CREATE_TRIGGER:
case DependencyManager.DROP_TRIGGER:
case DependencyManager.DROP_COLUMN:
case DependencyManager.DROP_COLUMN_RESTRICT:
case DependencyManager.UPDATE_STATISTICS:
case DependencyManager.DROP_STATISTICS:
case DependencyManager.TRUNCATE_TABLE:
/*
** If we are already invalid, don't write ourselves
** out. Just to be safe, we'll send out an invalidate
** to our dependents either way.
*/
if (valid == true)
{
valid = false;
updateSYSSTATEMENTS(lcc, INVALIDATE, null);
}
dm.invalidateFor(this, dm.USER_RECOMPILE_REQUEST, lcc);
break;
case DependencyManager.DROP_SPS:
//System.out.println("SPSD " + preparedStatement);
dm.clearDependencies(lcc, this);
break;
default:
/*
** We should never get here, since we can't have dangling references
*/
if (SanityManager.DEBUG)
{
SanityManager.THROWASSERT("makeInvalid("+
dm.getActionString(action)+
") not expected to get called; should have failed in "+
"prepareToInvalidate()");
}
break;
}
}
/**
* Invalidate and revalidate. The functional equivalent
* of calling makeInvalid() and makeValid(), except it
* is optimized.
*
* @exception StandardException on error
*/
public final synchronized void revalidate(LanguageConnectionContext lcc)
throws StandardException
{
/*
** Mark it as invalid first to ensure that
** we don't write SYSSTATEMENTS 2x.
*/
valid = false;
makeInvalid(DependencyManager.USER_RECOMPILE_REQUEST, lcc);
prepareAndRelease(lcc);
updateSYSSTATEMENTS(lcc, RECOMPILE, null);
}
/**
* Load the underlying generatd class. This is not expected
* to be used outside of the datadictionary package. It
* is used for optimizing class loading for sps
* cacheing.
*
* @exception StandardException on error
*/
public void loadGeneratedClass() throws StandardException
{
/*
** On upgrade, we null out the statement body,
** so handle that here.
*/
if (preparedStatement != null)
{
((StorablePreparedStatement)preparedStatement).loadGeneratedClass();
}
}
/*
** Update SYSSTATEMENTS with the changed the descriptor.
** Always done in the user XACT.
** <p>
** Ideally, the changes to SYSSTATEMENTS would be made
** in a separate xact as the current user xact, but this
** is painful (you'ld need to get a new ContextManager
** and then push all of the usual langauge contexts
** onto it and THEN call AccessManager.getTransaction()),
** and it wont work, because the xact is in a different
** compatibility space and will self deadlock (e.g.
** in the process of call DependencyManager.makeInvalid()
** we first did a DDdependableFinder.getDependable()
** which called DataDictionaryImpl.getSPSDescriptor()
** so we hold a lock on SYS.SYSSTATEMENTS by the
** time we get a 2nd xact and try to drop the statement).
*/
private void updateSYSSTATEMENTS(LanguageConnectionContext lcc, int mode, TransactionController tc)
throws StandardException
{
int[] colsToUpdate;
boolean updateSYSCOLUMNS, recompile;
//bug 4821 - we want to wait for locks if updating sysstatements on parent transaction
boolean wait = false;
boolean firstCompilation = false;
if (mode == RECOMPILE)
{
recompile = true;
updateSYSCOLUMNS = true;
if(!initiallyCompilable)
{
firstCompilation = true;
initiallyCompilable = true;
}
}
else
{
recompile = false;
updateSYSCOLUMNS = false;
}
DataDictionary dd = getDataDictionary();
if (((org.apache.derby.impl.sql.catalog.DataDictionaryImpl) dd).readOnlyUpgrade)
return;
/*
** Get busy time
*/
dd.startWriting(lcc);
if (tc == null) { //bug 4821 - tc will passed null if we want to use the user transaction
tc = lcc.getTransactionExecute();
wait = true;
}
dd.updateSPS(this,
tc,
recompile,
updateSYSCOLUMNS,
wait,
firstCompilation);
}
/**
* Get the UUID for the given string
*
* @param idString the string
*
* @return the UUID
*/
private UUID recreateUUID(String idString)
{
if (uuidFactory == null)
{
uuidFactory = Monitor.getMonitor().getUUIDFactory();
}
return uuidFactory.recreateUUID(idString);
}
/** @see TupleDescriptor#getDescriptorType */
public String getDescriptorType() { return "Statement"; }
/** @see TupleDescriptor#getDescriptorName */
// RESOLVE: some descriptors have getName. some descriptors have
// getTableName, getColumnName whatever! try and unify all of this to one
// getDescriptorName!
public String getDescriptorName() { return name; }
}
The table below shows all metrics for SPSDescriptor.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 72.00 | Number of blocks | |
| BLOCK_COMMENT | 104.00 | Number of block comment lines | |
| COMMENTS | 505.00 | Comment lines | |
| COMMENT_DENSITY | 1.30 | Comment density | |
| COMPARISONS | 26.00 | Number of comparison operators | |
| CYCLOMATIC | 137.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 51.00 | Comments in declarations | |
| DOC_COMMENT | 356.00 | Number of javadoc comment lines | |
| ELOC | 388.00 | Effective lines of code | |
| EXEC_COMMENTS | 27.00 | Comments in executable code | |
| EXITS | 61.00 | Procedure exits | |
| FUNCTIONS | 40.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 78.52 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 113.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 0.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 0.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 4.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 0.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 0.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 0.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 1.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 1.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 2.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 1.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 0.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 0.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 1.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 0.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 1.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 0.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 0.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 0.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 0.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 0.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 1.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 1.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 3.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 1.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 1.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 2.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 0.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 0.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 0.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 1.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 2.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 16.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 2243.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 0.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 0.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 2.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 0.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 8.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 2.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 2.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 0.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 1138.00 | Number of lines in the source file | |
| LINE_COMMENT | 45.00 | Number of line comments | |
| LOC | 533.00 | Lines of code | |
| LOGICAL_LINES | 179.00 | Number of statements | |
| LOOPS | 1.00 | Number of loops | |
| NEST_DEPTH | 6.00 | Maximum nesting depth | |
| OPERANDS | 912.00 | Number of operands | |
| OPERATORS | 1695.00 | Number of operators | |
| PARAMS | 45.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 2607.00 | Halstead program length | |
| PROGRAM_VOCAB | 354.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 68.00 | Number of return points from functions | |
| SIZE | 31857.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 302.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 52.00 | Number of unique operators | |
| WHITESPACE | 100.00 | Number of whitespace lines | |