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## org.apache.cayenne.exp.parser
Class PatternMatchNode

    java.lang.Object
      org.apache.cayenne.exp.Expression
          org.apache.cayenne.exp.parser.SimpleNode
              org.apache.cayenne.exp.parser.ConditionNode
                  org.apache.cayenne.exp.parser.PatternMatchNode

All Implemented Interfaces:
  Serializable, Node, XMLSerializable

Direct Known Subclasses:
  ASTLike, ASTLikeIgnoreCase, ASTNotLike, ASTNotLikeIgnoreCase

    public abstract class PatternMatchNode

extends ConditionNode

Superclass of pattern matching nodes. Assumes that subclass is a binary expression with the second operand being a pattern.

Since:
  1.1
See Also:
  Serialized Form

Field Summary
`protected char` | `escapeChar`
`protected boolean` | `ignoringCase`
`protected Pattern` | `pattern`
`protected boolean` | `patternCompiled`

Fields inherited from class org.apache.cayenne.exp.parser.SimpleNode
`children, id, parent`

Fields inherited from class org.apache.cayenne.exp.Expression
`ADD, AND, BETWEEN, DB_PATH, DIVIDE, EQUAL_TO, FALSE, GREATER_THAN, GREATER_THAN_EQUAL_TO, IN, LESS_THAN, LESS_THAN_EQUAL_TO, LIKE, LIKE_IGNORE_CASE, LIST, MULTIPLY, NEGATIVE, NOT, NOT_BETWEEN, NOT_EQUAL_TO, NOT_IN, NOT_LIKE, NOT_LIKE_IGNORE_CASE, OBJ_PATH, OR, PRUNED_NODE, SUBTRACT, TRUE, type`

Method Summary
`char` | `getEscapeChar()` This method will return an escape character for the like clause.
`protected Pattern` | `getPattern()`
`void` | `jjtAddChild(Node n, int i)` This method tells the node to add its argument to the node's list of children.
`protected boolean` | `matchPattern(String string)`
`void` | `setEscapeChar(char value)` This method allows the setting of the escape character.

Methods inherited from class org.apache.cayenne.exp.parser.ConditionNode
`jjtSetParent`

Methods inherited from class org.apache.cayenne.exp.parser.SimpleNode
`connectChildren, encodeAsEJBQL, encodeAsEscapedString, encodeAsString, encodeChildrenAsEJBQL, encodeScalarAsString, evaluate, evaluateChild, evaluateNode, expName, flattenTree, getEJBQLExpressionOperator, getExpressionOperator, getOperand, getOperandCount, getPathAliases, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, notExp, pruneNodeForPrunedChild, setOperand, unwrapChild, wrapChild`

Methods inherited from class org.apache.cayenne.exp.Expression
`andExp, deepCopy, encodeAsXML, equals, expWithParameters, expWithParameters, filter, filterObjects, fromString, getType, joinExp, match, orExp, setType, shallowCopy, toEJBQL, toString, transform, transformExpression, traverse, traverse`

Methods inherited from class java.lang.Object
`clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### pattern

    protected Pattern pattern

### patternCompiled

    protected boolean patternCompiled

### ignoringCase

    protected boolean ignoringCase

### escapeChar

    protected char escapeChar

Method Detail

### getEscapeChar

    public char getEscapeChar()

  This method will return an escape character for the like clause. The escape character will eventually end up in the query as `...(t0.foo LIKE ? {escape '|'}) where the pipe symbol is the escape character.`

  Note that having no escape character is represented as the character 0.

### setEscapeChar

    public void setEscapeChar(char value)

  This method allows the setting of the escape character. The escape character can be used in a LIKE clause. The character 0 signifies no escape character. The escape characyer '?' is disallowed.

### matchPattern

    protected boolean matchPattern(String string)

### getPattern

    protected Pattern getPattern()

### jjtAddChild

    public void jjtAddChild(Node n,
                            int i)

  Description copied from interface: `Node`
  This method tells the node to add its argument to the node's list of children.

  Specified by:
    `jjtAddChild` in interface `Node`
  Overrides:
    `jjtAddChild` in class `SimpleNode`

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