co.jirm.core.sql.ImmutableParameterized.java Source code

Introduction

Here is the source code for co.jirm.core.sql.ImmutableParameterized.java

Source

/**
 * Copyright (C) 2012 the original author or authors.
 *
 * 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 co.jirm.core.sql;

import static co.jirm.core.util.JirmPrecondition.check;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;

public abstract class ImmutableParameterized<T> implements ParametersBuilder<T> {

    protected final ImmutableList<Object> parameters;
    protected final ImmutableMap<String, Object> nameParameters;

    public ImmutableParameterized() {
        this(ImmutableList.<Object>of(), ImmutableMap.<String, Object>of());
    }

    public ImmutableParameterized(ImmutableParameterized<?> child) {
        this.parameters = child.parameters;
        this.nameParameters = child.nameParameters;
    }

    public ImmutableParameterized(ImmutableList<Object> parameters, ImmutableMap<String, Object> nameParameters) {
        super();
        this.parameters = parameters;
        this.nameParameters = nameParameters;
    }

    protected ImmutableParameterized(ImmutableParameterized<?> child, String key, Object value) {
        this(child.parameters, addParameter(child, key, value));
    }

    protected static ImmutableMap<String, Object> addParameter(ImmutableParameterized<?> child, String key,
            Object value) {
        check.argument(!child.parameters.contains(key), "parameter has already been set: {}", key);
        return ImmutableMap.<String, Object>builder().putAll(child.nameParameters).put(key, value).build();
    }

    protected ImmutableParameterized(ImmutableParameterized<?> child, Object value) {
        this(addParameter(child, value), child.nameParameters);
    }

    protected static ImmutableList<Object> addParameter(ImmutableParameterized<?> child, Object value) {
        return ImmutableList.builder().addAll(child.parameters).add(value).build();
    }

    public ImmutableList<Object> getParameters() {
        return parameters;
    }

    public ImmutableMap<String, Object> getNameParameters() {
        return nameParameters;
    }

    public abstract T bind(String key, Object value);

    public abstract T with(Object... value);

    public ImmutableList<Object> mergedParameters() {
        return getParameters();
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((nameParameters == null) ? 0 : nameParameters.hashCode());
        result = prime * result + ((parameters == null) ? 0 : parameters.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        @SuppressWarnings("rawtypes")
        ImmutableParameterized other = (ImmutableParameterized) obj;
        if (nameParameters == null) {
            if (other.nameParameters != null)
                return false;
        } else if (!nameParameters.equals(other.nameParameters))
            return false;
        if (parameters == null) {
            if (other.parameters != null)
                return false;
        } else if (!parameters.equals(other.parameters))
            return false;
        return true;
    }

}