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-rw-r--r--trunk/qpid/java/client/src/main/java/org/apache/qpid/filter/UnaryExpression.java321
1 files changed, 0 insertions, 321 deletions
diff --git a/trunk/qpid/java/client/src/main/java/org/apache/qpid/filter/UnaryExpression.java b/trunk/qpid/java/client/src/main/java/org/apache/qpid/filter/UnaryExpression.java
deleted file mode 100644
index b620b107c4..0000000000
--- a/trunk/qpid/java/client/src/main/java/org/apache/qpid/filter/UnaryExpression.java
+++ /dev/null
@@ -1,321 +0,0 @@
-/* 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.qpid.filter;
-
-import org.apache.qpid.QpidException;
-import org.apache.qpid.client.message.AbstractJMSMessage;
-
-import java.math.BigDecimal;
-import java.util.List;
-import java.util.Collection;
-import java.util.HashSet;
-import java.util.Iterator;
-
-/**
- * An expression which performs an operation on two expression values
- */
-public abstract class UnaryExpression implements Expression
-{
-
- private static final BigDecimal BD_LONG_MIN_VALUE = BigDecimal.valueOf(Long.MIN_VALUE);
- protected Expression right;
-
- public static Expression createNegate(Expression left)
- {
- return new UnaryExpression(left)
- {
- public Object evaluate(AbstractJMSMessage message) throws QpidException
- {
- Object rvalue = right.evaluate(message);
- if (rvalue == null)
- {
- return null;
- }
-
- if (rvalue instanceof Number)
- {
- return UnaryExpression.negate((Number) rvalue);
- }
-
- return null;
- }
-
- public String getExpressionSymbol()
- {
- return "-";
- }
- };
- }
-
- public static BooleanExpression createInExpression(PropertyExpression right, List elements, final boolean not)
- {
-
- // Use a HashSet if there are many elements.
- Collection t;
- if (elements.size() == 0)
- {
- t = null;
- }
- else if (elements.size() < 5)
- {
- t = elements;
- }
- else
- {
- t = new HashSet(elements);
- }
-
- final Collection inList = t;
-
- return new BooleanUnaryExpression(right)
- {
- public Object evaluate(AbstractJMSMessage message) throws QpidException
- {
-
- Object rvalue = right.evaluate(message);
- if (rvalue == null)
- {
- return null;
- }
-
- if (rvalue.getClass() != String.class)
- {
- return null;
- }
-
- if (((inList != null) && inList.contains(rvalue)) ^ not)
- {
- return Boolean.TRUE;
- }
- else
- {
- return Boolean.FALSE;
- }
-
- }
-
- public String toString()
- {
- StringBuffer answer = new StringBuffer();
- answer.append(right);
- answer.append(" ");
- answer.append(getExpressionSymbol());
- answer.append(" ( ");
-
- int count = 0;
- for (Iterator i = inList.iterator(); i.hasNext();)
- {
- Object o = (Object) i.next();
- if (count != 0)
- {
- answer.append(", ");
- }
-
- answer.append(o);
- count++;
- }
-
- answer.append(" )");
-
- return answer.toString();
- }
-
- public String getExpressionSymbol()
- {
- if (not)
- {
- return "NOT IN";
- }
- else
- {
- return "IN";
- }
- }
- };
- }
-
- abstract static class BooleanUnaryExpression extends UnaryExpression implements BooleanExpression
- {
- public BooleanUnaryExpression(Expression left)
- {
- super(left);
- }
-
- public boolean matches(AbstractJMSMessage message) throws QpidException
- {
- Object object = evaluate(message);
-
- return (object != null) && (object == Boolean.TRUE);
- }
- }
-
- ;
-
- public static BooleanExpression createNOT(BooleanExpression left)
- {
- return new BooleanUnaryExpression(left)
- {
- public Object evaluate(AbstractJMSMessage message) throws QpidException
- {
- Boolean lvalue = (Boolean) right.evaluate(message);
- if (lvalue == null)
- {
- return null;
- }
-
- return lvalue.booleanValue() ? Boolean.FALSE : Boolean.TRUE;
- }
-
- public String getExpressionSymbol()
- {
- return "NOT";
- }
- };
- }
- public static BooleanExpression createBooleanCast(Expression left)
- {
- return new BooleanUnaryExpression(left)
- {
- public Object evaluate(AbstractJMSMessage message) throws QpidException
- {
- Object rvalue = right.evaluate(message);
- if (rvalue == null)
- {
- return null;
- }
-
- if (!rvalue.getClass().equals(Boolean.class))
- {
- return Boolean.FALSE;
- }
-
- return ((Boolean) rvalue).booleanValue() ? Boolean.TRUE : Boolean.FALSE;
- }
-
- public String toString()
- {
- return right.toString();
- }
-
- public String getExpressionSymbol()
- {
- return "";
- }
- };
- }
-
- private static Number negate(Number left)
- {
- Class clazz = left.getClass();
- if (clazz == Integer.class)
- {
- return new Integer(-left.intValue());
- }
- else if (clazz == Long.class)
- {
- return new Long(-left.longValue());
- }
- else if (clazz == Float.class)
- {
- return new Float(-left.floatValue());
- }
- else if (clazz == Double.class)
- {
- return new Double(-left.doubleValue());
- }
- else if (clazz == BigDecimal.class)
- {
- // We ussually get a big deciamal when we have Long.MIN_VALUE constant in the
- // Selector. Long.MIN_VALUE is too big to store in a Long as a positive so we store it
- // as a Big decimal. But it gets Negated right away.. to here we try to covert it back
- // to a Long.
- BigDecimal bd = (BigDecimal) left;
- bd = bd.negate();
-
- if (UnaryExpression.BD_LONG_MIN_VALUE.compareTo(bd) == 0)
- {
- return new Long(Long.MIN_VALUE);
- }
-
- return bd;
- }
- else
- {
- throw new RuntimeException("Don't know how to negate: " + left);
- }
- }
-
- public UnaryExpression(Expression left)
- {
- this.right = left;
- }
-
- public Expression getRight()
- {
- return right;
- }
-
- public void setRight(Expression expression)
- {
- right = expression;
- }
-
- /**
- * @see Object#toString()
- */
- public String toString()
- {
- return "(" + getExpressionSymbol() + " " + right.toString() + ")";
- }
-
- /**
- * TODO: more efficient hashCode()
- *
- * @see Object#hashCode()
- */
- public int hashCode()
- {
- return toString().hashCode();
- }
-
- /**
- * TODO: more efficient hashCode()
- *
- * @see Object#equals(Object)
- */
- public boolean equals(Object o)
- {
-
- if ((o == null) || !this.getClass().equals(o.getClass()))
- {
- return false;
- }
-
- return toString().equals(o.toString());
-
- }
-
- /**
- * Returns the symbol that represents this binary expression. For example, addition is
- * represented by "+"
- *
- * @return
- */
- public abstract String getExpressionSymbol();
-
-}
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