org.drools.lang.dsl.DSLMappingEntry Maven / Gradle / Ivy
/*
* Copyright 2006 JBoss Inc
*
* Licensed 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.drools.lang.dsl;
import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;
/**
* A single entry in a DSL mapping file
*
* @author etirelli
*/
public interface DSLMappingEntry {
public static final Section KEYWORD = new KeywordSection();
public static final Section CONDITION = new ConditionSection();
public static final Section CONSEQUENCE = new ConsequenceSection();
public static final Section ANY = new AnySection();
public static final MetaData EMPTY_METADATA = new DefaultDSLEntryMetaData( "" );
/**
* Returns the section this mapping entry refers to
*
* @return
*/
public DSLMappingEntry.Section getSection();
/**
* Returns the meta data info about this mapping entry
*
* @return
*/
public DSLMappingEntry.MetaData getMetaData();
/**
* Returns the key of this mapping, i.e., the source
* that needs to be translated
*
* @return
*/
public String getMappingKey();
/**
* Returns the result of the translation
*
* @return
*/
public String getMappingValue();
/**
* Returns the compiled pattern based on the given MappingKey
* @return the keyPattern
*/
public Pattern getKeyPattern();
/**
* Returns the transformed mapping value using place holders for variables
* @return the valuePattern
*/
public String getValuePattern();
/**
* Returns the list of variables found in the given pattern key
* @return the variables
*/
public Map getVariables();
/**
* @param key the key to set
*/
public void setMappingKey(String key);
/**
* @param section the section to set
*/
public void setSection(Section section);
/**
* @param value the value to set
*/
public void setMappingValue(String value);
/**
* @param metadata the metadata to set
*/
public void setMetaData(MetaData metadata);
/**
* Returns a list of errors found in this mapping
* @return
*/
public List getErrors();
/**
* An inner interface for DSL mapping sections
* @author etirelli
*
*/
public static interface Section
extends
Comparable {
public String getSymbol();
}
/**
* An inner interface to represent any metadata
* associated with this entry. It is obviously
* implementation dependent.
*
* @author etirelli
*
*/
public static interface MetaData
extends
Comparable {
public String toString();
public String getMetaData();
}
/**
* The keyword section, to allow mapping of keywords
*
* @author etirelli
*/
public static class KeywordSection
implements
Section {
private static final String symbol = "[keyword]";
private KeywordSection() {
}
public String getSymbol() {
return symbol;
}
public String toString() {
return symbol;
}
public int hashCode() {
final int PRIME = 31;
int result = 1;
result = PRIME * result + ((symbol == null) ? 0 : symbol.hashCode());
return result;
}
public boolean equals(final Object obj) {
if ( this == obj ) {
return true;
}
if ( obj == null ) {
return false;
}
if ( getClass() != obj.getClass() ) {
return false;
}
final KeywordSection other = (KeywordSection) obj;
if ( symbol == null ) {
if ( other.getSymbol() != null ) {
return false;
}
} else if ( !symbol.equals( other.getSymbol() ) ) {
return false;
}
return true;
}
public int compareTo(final Object arg0) {
return this.toString().compareTo( arg0.toString() );
}
}
/**
* The condition section, to allow mapping of the conditions
*
* @author etirelli
*/
public static class ConditionSection
implements
Section {
private static final String symbol = "[condition]";
private ConditionSection() {
}
public String getSymbol() {
return symbol;
}
public String toString() {
return symbol;
}
public int hashCode() {
final int PRIME = 31;
int result = 1;
result = PRIME * result + ((symbol == null) ? 0 : symbol.hashCode());
return result;
}
public boolean equals(final Object obj) {
if ( this == obj ) {
return true;
}
if ( obj == null ) {
return false;
}
if ( getClass() != obj.getClass() ) {
return false;
}
final KeywordSection other = (KeywordSection) obj;
if ( symbol == null ) {
if ( other.getSymbol() != null ) {
return false;
}
} else if ( !symbol.equals( other.getSymbol() ) ) {
return false;
}
return true;
}
public int compareTo(final Object arg0) {
return this.toString().compareTo( arg0.toString() );
}
}
/**
* The consequence section to allow the mapping
* of consequence elements
*
* @author etirelli
*/
public static class ConsequenceSection
implements
Section {
private static final String symbol = "[consequence]";
private ConsequenceSection() {
}
public String getSymbol() {
return symbol;
}
public String toString() {
return symbol;
}
public int hashCode() {
final int PRIME = 31;
int result = 1;
result = PRIME * result + ((symbol == null) ? 0 : symbol.hashCode());
return result;
}
public boolean equals(final Object obj) {
if ( this == obj ) {
return true;
}
if ( obj == null ) {
return false;
}
if ( getClass() != obj.getClass() ) {
return false;
}
final KeywordSection other = (KeywordSection) obj;
if ( symbol == null ) {
if ( other.getSymbol() != null ) {
return false;
}
} else if ( !symbol.equals( other.getSymbol() ) ) {
return false;
}
return true;
}
public int compareTo(final Object arg0) {
return this.toString().compareTo( arg0.toString() );
}
}
/**
* An element to indicate the mapping should be applicable
* to any section
*
* @author etirelli
*/
public static class AnySection
implements
Section {
private static final String symbol = "[*]";
private AnySection() {
}
public String getSymbol() {
return symbol;
}
public String toString() {
return symbol;
}
public int hashCode() {
final int PRIME = 31;
int result = 1;
result = PRIME * result + ((symbol == null) ? 0 : symbol.hashCode());
return result;
}
public boolean equals(final Object obj) {
if ( this == obj ) {
return true;
}
if ( obj == null ) {
return false;
}
if ( getClass() != obj.getClass() ) {
return false;
}
final KeywordSection other = (KeywordSection) obj;
if ( symbol == null ) {
if ( other.getSymbol() != null ) {
return false;
}
} else if ( !symbol.equals( other.getSymbol() ) ) {
return false;
}
return true;
}
public int compareTo(final Object arg0) {
return this.toString().compareTo( arg0.toString() );
}
}
public static class DefaultDSLEntryMetaData
implements
DSLMappingEntry.MetaData {
private String metadata;
public DefaultDSLEntryMetaData(final String metadata) {
this.metadata = metadata;
}
public String getMetaData() {
return this.metadata;
}
public String toString() {
return (this.metadata == null) ? "" : this.metadata;
}
public int compareTo(final Object arg0) {
return this.toString().compareTo( arg0.toString() );
}
}
}
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